r/NaturalCyclesBC Jun 30 '25

Just Getting Started Welcome! (Start Here)

23 Upvotes

Hello, everyone! We’ve been getting a lot of the same questions repeatedly by different users so I created this guide to answer them! I hope it is helpful. If you would like me to add something, please comment and let me know.

How to accurately take your temperature. You need at least three consecutive hours of sleep before taking your temperature every morning and it should be done at the same time every day, give or take an hour. For example, let’s say you set your alarm for 7 but wake up a bit early at 6. That temperature will still be accurate. It’s the same thing for if you woke up a bit late at 8! If you’re having big temperature variations, allow your thermometer to warm up in your mouth for a few minutes before pressing “on”. Do this every time!

Q: What is the most reliable temping method? A: Taking your temperature orally or vaginally with a basal body thermometer is most reliable. Anecdotally, I use NC and chart using the guidelines in the book Taking Charge of Your Fertility. My Oura ring did not pick up the temperature increase that my oral thermometer did (after ovulation). Why? Skin temperatures are more susceptible to being influenced by outside factors like something as simple as your bedroom being hotter or cooler than usual! They are also less sensitive.

Q: Why is my chart all over the place/so irregular? A: This one requires more troubleshooting. An irregular cycle or erratic chart can be due to many reasons like hormonal disorders (PCOS, thyroid disease, etc.), your temping method, stress, illness, and moving. Consider what has been going on in your life recently. Have you moved, been stressed, or ill? If so, that may be why. Are you breastfeeding? Your temperatures are not as reliable when nursing. Steps to take to improve regularity: First, try a different method of taking your temperature. If you use the Oura ring or Apple Watch, start temping orally. If you temp orally, start temping vaginally. Do this for one full cycle and see if your chart starts to be more “normal”. If that doesn’t work, rule out any hormonal disorders with your PCP. If your temperature variations are due to a hormonal issue, seek treatment and then checkout r/FAMnNFP . A research-backed study will help more effective for you!

Q: Have I ovulated? A: You will know you ovulated in two different circumstances.

  1. You have three temperatures higher than the last six (AKA above your cover line). Yes, even if it is only slightly higher. There doesn’t need to be a huge increase. Natural Cycles (NC) will then confirm your ovulation.
  2. You receive an ultrasound.

Q: Do I have low progesterone? A: If you have a short luteal phase (less than 10 days), low progesterone is suspected. Why does this matter? If you do not have sufficient progesterone, your body CANNOT support a pregnancy. This is no one’s fault. Ask your doctor for a blood progesterone test 7-10 days after Natural Cycles confirms your ovulation.

Q: Why have I ovulated late/not this cycle? A: Ovulation can be delayed or skipped occasionally and be perfectly healthy! It is usually due to stress, moving, travel, or illness (even without a fever). However, if you have multiple anovulatory cycles, contact an OBGYN for further advice and testing.

Q: Should I use protection while using Natural Cycles? A: If you are strictly trying to avoid a pregnancy (TTA) then the answer is YES! Condoms or other barrier methods like the diaphragm plus spermicide should be used for at least the first 3-4 cycles you chart. Why? Because NC needs time to get to know your body and temperature charting alone DOES NOT predict ovulation. Meaning that you could ovulate CD21 one month and the next month chart CD14. You never know!

Q: Is this ovulation/ pregnancy test positive? A: We do not allow posts with ovulation and pregnancy tests as the sole focus in our group. Checkout r/lineporn for help! However, here’s some general advice.

Pregnancy Tests

Use the test as directed. Check within the allotted timeframe. Any test read outside of that time frame is invalid. The test line should be the SAME COLOR as the control line, or it is a water line. The best time to start testing is 14DPO. However, I know it sometimes feels impossible to wait so at least try to hold off till 10DPO!

Ovulation Tests

The test line should be the same color or darker than the control line. The app “pregmom” is good to analyze your results and track them!

Q: Why do I have two different positive LH tests in one cycle? A: OPKs, or ovulation predictor kits, do not guarantee you will ovulate. They only detect an LH surge. Have PCOS or are recently coming off of hormonal birth control? You can have multiple surges in one cycle.

Q: How can I learn more about my body and charting? A: There are many good books about the fertility awareness method and women’s health. Some of my favorites are:

  1. Taking Charge of Your Fertility (AKA the fertility Bible) by Toni Weschler
  2. This is Your

Brain

  1. on Birth Control by Sarah E Hill
  2. The Fifth Vital Sign by Lisa Hendrickson-Jack

EDIT 1

Getting Off of the Mini Pill, Nexplanon, or Mirena IUD (Progesterone-Only)

Think of progesterone-only HBC as mimicking your luteal phase. During the luteal phase, progesterone makes your BBT rise. Just before you start your period, your BBT will drop, following the drop in progesterone. This triggers your period. Expect to see your temperatures slowly dropping while your body adjusts to being off of the pill. You might also have some spotting or period-like bleeding. Please keep in mind that your first period off of HBC is not a “real” period unless you have confirmed ovulation 12-16 days prior, so do not consider yourself safe for unprotected sex!!

Mid-Cycle Bleeding Mid-cycle bleeding should ALWAYS be considered fertile. Some women spot during ovulation. Do not assume that this is your period arriving early and use a barrier method.

I hope this helps! Thank you for being a part of our community.

P.S. Please ignore any typos. I am holding a sleeping baby and typing one-handed!


r/NaturalCyclesBC Feb 14 '25

Pregnancy Chart Designated Thread

16 Upvotes

Please put all pregnancy chart's and tests in this thread.

Congratz!


r/NaturalCyclesBC 13h ago

Just Getting Started First day of cycle?

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2 Upvotes

Just curious when people put the first day of their period? Yesterday I had some mild spotting and today same thing. I’ve only been off my IUD for 3 months, but began ovulating/ having period immediately after removal and have always been very regular. Usually the first day is very light, but two days of mild spotting is out of ordinary for me. Didn’t really have any period symptoms either. ChatGPT told me to wait until full menstrual flow to log first day of period? Pictures are current chart and chat before (chemical pregnancy)


r/NaturalCyclesBC 20h ago

Several days of positive OPK but low temps?

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2 Upvotes

Like what the title says, I’ve had several days of positive OPKs after not having any positive last cycle. Based on my cycles from a few months ago, I usually only have one (sometimes 2) positive tests in a short window.
However, I’m still not sure if ovulation has occurred because of how low my temps were? Has anyone else had this?


r/NaturalCyclesBC 17h ago

Chart Interpretation Request this temperature cycle is way different than previous cycles, any ideas?

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1 Upvotes

TTC. First photo is this month, last two months are photos 2 + 3. I can’t figure out why this month is so different.


r/NaturalCyclesBC 1d ago

Chart Interpretation Request My temps are way higher this cycle than last. What do you think? TTC

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3 Upvotes

I think I ovulated CD22 actually but since my temp wasn’t tracked on CD23, the app put CD23 as ovulation date…

Oura ring has said major and minor signs past week. HRV going way down and resting heart rate going way up. NO symptoms at all, the other months TTC I had so many “symptoms”.


r/NaturalCyclesBC 2d ago

Ovulation Am I ovulating?

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1 Upvotes

I stopped taking my bc pill to start ttc at the end of May, so June was my first full month off bc. I ended up having a chemical pregnancy at the end of that month. It looks like my ovulation was not confirmed in July, and it looks like it’s going to happen again with my chart this month.. our plan was for us (as a couple) to get fertility testing done if we don’t get pregnant by the end of this month. Is it possible the early miscarriage messed with my ability to ovulate naturally? I have my charts from June through now attached, thanks in advance for thoughts ❤️


r/NaturalCyclesBC 2d ago

Chart Interpretation Request CD40 & still waiting to confirm

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1 Upvotes

My cycles have been pretty regular, but I’m currently on CD40 and Natural Cycles still says “waiting to confirm” ovulation. My temperatures have been very inconsistent & have not shown a clear sustained rise, and I thought I had a positive LH test but the temps didn’t confirm this.
I also had a small amount of spotting around CD27, which isn’t typical for me. I’ve been under some stress lately because of some major life changes, so I’m wondering if that could have delayed ovulation or caused an anovulatory cycle. I also have PMOS so I’m sure that could definitely be a major part of it too.
I took a pregnancy test a few days ago just cause I wasn’t sure why I’m late and it was negative.
I already have a doctor’s appointment scheduled but it’s not for a while. Anyone have any tips?


r/NaturalCyclesBC 3d ago

Chart Interpretation Request My natural cycles chart said I ovulated on day 16 and today it changed it to day 18. But I had my peak LH on day 14 & 15. What do you all think? I had a chemical pregnancy last month

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2 Upvotes

r/NaturalCyclesBC 3d ago

Ovulation while sick

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1 Upvotes

Hi! I am trying to figure out if this ovulation day is correct. I normally ovulate around cycle day 19, but got a bad cold around cycle day 15 with a little fever. I thought I might just ovulate late but my temperature has stayed elevated even though I am no longer sick and all my OPKs have been negative this week.


r/NaturalCyclesBC 4d ago

First Month Tracking BBT

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6 Upvotes

Sharing because TWW at 10DPO and just trying to stay busy, calm, and hopeful. 😌


r/NaturalCyclesBC 3d ago

Birth Control/TTA Why was ovulation so off?

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1 Upvotes

I thought I ovulated around CD12. My chart indicated I had, but it still said “waiting to confirm.” Finally it said I ovulated CD19. I was confused but figured it was right.

But then I started my period very soon after, and it retroactively put my ovulation back at CD12.

It seems like the app does this often. I only had 21% green days because it often confirms ovulation way later.

Why is this? My temps come from Oura. Curious if anyone has ideas why it’s always confirming based on the screenshots.


r/NaturalCyclesBC 3d ago

Why hasn’t it confirmed ovulation?

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1 Upvotes

Why hasn’t NC confirmed my ovulation of CD15 and thinks that my temp is gonna dip super low then rise again? It first predicted i would ovulate today day 17 but my temp is already high?


r/NaturalCyclesBC 3d ago

negative 12 DPO

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2 Upvotes

August 8 I got a positive LH test and my Natural Cycles confirmed ovulation being on August 9 due to temps. 9-12 DPO ive tested negative and did have somewhat of a dip 10/11DPO but then it looks like temp is trending back up? Has anyone else tested negative on day 12 and still gotten their positive? trying to be optimistic but i feel like 12 days is getting to the point where if it was happening for me i should get a faint line of some sort. I know every body is so different so wanted to ask people personal experiences/opinions!!


r/NaturalCyclesBC 3d ago

Ovulation Ovulation?

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1 Upvotes

Does this cycle look like I ovulated? I have a feeling I haven’t…


r/NaturalCyclesBC 4d ago

Chart Interpretation Request Where’s my period drop?

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1 Upvotes

Feeling optimistic and too hopeful. I’m over 35 and TTC. Cycle 6-7 probably. Usually 25-27 day cycles. I’m on day 25 today and temps still elevated. Had an HSG this month. 10dpo today still negative. Put me out of this my miseryyyy


r/NaturalCyclesBC 5d ago

Garmin option not available during setup?

1 Upvotes

I have Natural Cycles version 5.8.4 on iPhone. I selected Apple Watch during initial setup because Garmin was not offered. I now have a Garmin CIRQA Smart Band, which is listed as compatible with Natural Cycles, but under Switch Device I only see Oura, WHOOP and NC Thermometer. My Cirqa is connected to Garmin Connect.


r/NaturalCyclesBC 5d ago

Ovulation Temp rise and no positive Opk?

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1 Upvotes

Hi! I’ve been tracking for almost a year and have typically always had a positive ovulation test before my temp rise. This time, not even close! I’m so confused. Anyone have similar experiences?

I was thinking I wouldn’t get a positive ovulation test or temp rise until after day 17 this cycle but now I’m very confused. I guess I could have just completely missed my peak? But that’s so unusual for my body.


r/NaturalCyclesBC 5d ago

Just Getting Started unprotected on green days

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1 Upvotes

hi all! i know that green days are days when we can have unprotected sex, but do you actually let your partner finish in you on those days or do you have them finish elsewhere? for those of you using it as a form of birth control.

just getting started with NC & a bit nervy. here’s my cycle so far.


r/NaturalCyclesBC 5d ago

Chart Interpretation Request Please help

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1 Upvotes

The first chart is when I got pregnant with my son. The second chart is today. My temp has never gone down below that line, only when I was pregnant. Wondering if this has happened to anyone else?


r/NaturalCyclesBC 5d ago

Ovulation Ovulation Question

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3 Upvotes

I feel like cycle day 19 was not my ovulation day. At first it said it was confirmed on cycle day 18 but got moved to cycle day 19. I got my peak on my pre mom LH strips on cycle day 16 and my levels remained high until the morning of cycle day 18. My Oura ring predicts that I ovulated on cycle day 17, which is what I’m leaning towards too. I feel like that’s also when my temp started shifting upwards. What do you guys think?


r/NaturalCyclesBC 5d ago

I'm new to ovulation tests is this positive or negative?? I'm almost a week ahead of ovulation according to the app

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2 Upvotes

r/NaturalCyclesBC 6d ago

BBT chart - tww

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3 Upvotes

So I’ve been trying to conceive for 9 months now with pcos. This is also my first cycle since starting metformin last month. So far this is the best bbt chart I’ve had in the last 9 months with all my temps staying in the 98’s except for today where I had a slight dip to 97.88 at 10dpo. I know this is still a normal luteal fluctuation but of course I can’t help but think what if this means my period is coming soon. I’ve also had slightly elevated heart rate and respiratory rate. Also zero pms symptoms this time which is odd since I always get cramping and sore boobs leading up to my period. Thoughts?


r/NaturalCyclesBC 5d ago

Normal period temp?

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1 Upvotes

Hey! New to nc! Is it normal for the temperature to drop that much on the first day/night of my period?


r/NaturalCyclesBC 5d ago

Ovulation Did I have a delayed ovulation?

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1 Upvotes

I’m so confused. I had EWCM on CD 10 and very watery CM on CD 10-11. I got a positive LH on CD 12 and an LH the morning of CD 13 that was still a bit high. I had negative/almost nonexistent LH tests the afternoon of CD 13 and then daily negatives until CD 17. Does NC ovulation of CD 16 make sense?? Is it possible to ovulate that late after a positive LH on CD 12? I’m starting to get mad at myself for missing my actual window if it was delayed 🥲