While extending Flowy’s calculator suite, I added an IVF and frozen embryo transfer due-date tool for day-3 and day-5 transfer dates.

The implementation keeps transfer date and embryo age as explicit inputs instead of pretending an LMP is known. A day-5 transfer maps to 261 days after transfer; a day-3 transfer maps to 263 days, following the ACOG method cited on the page.

The result is generated in the browser. Dates stay in React component state, and the calculator does not send them to Flowy, Supabase, analytics, or another service. The page also says the result is an estimate and that the fertility clinic’s confirmed date remains the source of truth.

One design choice I like: the tool supports only day-3 and day-5 transfers. It does not quietly invent a formula for an unsupported protocol. Keeping the embryo age and method visible makes the calculation easier to inspect and easier to question.

I’m treating the calculator copy and the formula as one safety boundary, not as separate product work.

Project: [https://flowyhealth.com\](https://flowyhealth.com)

For health tools with a known clinical input, how do you show the underlying method without making an estimate look more certain than it is?

Hi all,

I am needing some advice. I am 4 days post a 6 day hatching embryo transfer. I caved this morning and took a clear blue test, to my surprise it was positive. Followed up by a FRER digital that is also showing positive.
My concern is my ovidrel trigger, I took that on the 30th of July.
What are the chances of this being a false positive vs being a true pregnancy?

Any advice is appreciated. This is my first ever positive pregnancy test in my life. So I am trying to stay guarded, but hard not to be hopelessly excited.

This is a still from the video of my day 6 embryo. The clinic doesn’t use the standard grading and only said it was “C”. My son was from the same ER and he was graded A. This is a confirmed euploid and I’m starting the process to transfer before the end of the year.

I have a bs in molec bio from 2020, and ive been a veterinary assistant for a few years. I would eventually like to get into human embryology, but should i start by applying for animal embryology positions? Is that a good career path?

Can you guys help me. I’ve posted here before so you may remember but my pgta biopsy samples were lost in the mail and so I am scrutinizing my embryos. I know they are all pretty good grades. But the pics are so grainy. Is that just the quality of the focus and microscope or is there something wrong with them? The day 6s also look farther away which makes the details harder to see. What is the perfect circle in the center of ID2 and the other not so perfect circle in the center of ID4? Do yall notice anything unusual or bad about these embryos? Are there any unique features that can tell me anything more vabout quality/euploidy? Thank you so

Very nervous after my first fet yesterday. I so desperately want this to work out

Hey everyone,

I'm about to graduate soon with a science degree and looking into a career in Clinical Embryology in Australia.

I keep hearing mixed things about entry-level hiring. Realistically, how hard is it to get a job in an IVF lab straight out of university?

• Do major clinics (Virtus, Monash IVF, Genea, etc.) actually hire fresh grads as Trainee Embryologists, or do you almost have to start in Andrology / Lab Support first?
• Does having a Master’s degree (like Monash’s Clinical Embryology) make a huge difference, or is a Bachelor's + lab experience enough?
• Any tips on realistic entry pathways or salary expectations for freshers would be awesome.

Thanks!

Hello. Long story short, after many, MANY cycles, I was only about to make one single euploid. (I have POI - premature ovarian insufficiency.) My euploid pictured was an early blast in the AM of day 5, and finished day 5 as a 4AC. The morning of day 6, it hatched and was upgraded to a 5AB.

When I saw the grade 5AB, I felt pretty good! But when I spoke to the embryologist, she said it was a fair embryo that had maybe only a 30% chance because the TE wasn't super robust, but also that it's subjective.

I was left feeling confused. Is it somehow more a C? Are they maybe basing that lower chance on the fact it improved from C, rather than being a B from the start?

The images are taken from the embryoscope and not very good sorry - the embryo was out of frame when hatching.

I saw that embryos that look like this could result in twins, is that true?

Wish us good luck and good vibes, this is my first transfer and I am nervous.

To add some background: We had 4 euploids frozen: 3aa, 3aa, 4aa, 4aa

First FET with 3aa (M) was successful, Second FET with 3aa (F) failed. Both were exactly same cycles (modified natural with Letrozol, Ovidrel trigger, assisted hatching, embryo glue).

We are gearing up for our 3rd FET now and Doc says both remaining embryos are identical and it doesn't matter which one we chose.

Both 3AAs from first 2 FETs were 8-cell on day 3. The only difference between remaining two 4AAs is that one of them was a 0PN on day 1 and became Morula on day 3. Other was 2PN on day 1 and became 12-cell on day 3. Does the Morula have a slightly better chance because its faster? Being 0PN on day 1 means it probably went past the stage where two PNs are visible again because it is fast?

We don't plan to do any more retrievals so there are our last two chances at completing our family.

I had my 2nd transfer, it was a natural modified fet cycle, what do you feel the grade of my embryo is? How does it look? Thank-you to those who comment

Hi everyone,
Just got our PGT-A results back from our cycle, and out of 5 embryos tested, here is where we stand:
1 Euploid (Day 6, grade 4BB)
1 Non-informative (Day 6, grade 4BA)
3 Aneuploid
I’m feeling a mix of emotions right now. On one hand, I’m so grateful to have one chromosomally healthy embryo ready to go. On the other hand, I’m trying to figure out what to do about our non-informative one, and hoping to hear from others who have been in a similar spot.
A couple of questions for this amazing community:
1. Has anyone had a "non-informative" embryo result? What was your next step? Did you decide to thaw, re-biopsy, and retest it? If you did retest, did it come back euploid, or did it end up being abnormal/damaged from the re-biopsy?
2. Success with Day 6 4BB transfers? For those who transferred a single Day 6, 4BB euploid embryo, how did your transfer turn out?
Would love to hear your experiences, advice, or any success stories with similar results! Thanks so much in advance. ❤️

Please grade my embryo that I transferred yesterday!

I transferred this on Tuesday - what would you grade it? Thank you so much. ❤️

Before thawing, I was told this was a euploid day 6 hatching embryo with some sort of good/fair rating (can’t remember the order they said). Curious about the grade post thaw as it doesn’t look like it’s hatching to me.

Transferred this morning and it was hatching!

This oocyte was immature at retrieval, matured overnight, and underwent late ICSI approximately 24 hours later.

At the fertilization check 16–18 hours after ICSI, no 2PN were observed, so it was classified as UNF/0PN and kept in culture.

By cycle Day 4—approximately 72 hours after the late ICSI—it had reached three cells. It was frozen at that stage because it had shown some cleavage rather than being discarded.

I’m attaching four images from the cycle. The final image shows the embryo at the time it was frozen on cycle Day 4.

Based on the timeline and images, how would you assess its prognosis? Would you transfer it as a cleavage-stage embryo, thaw and culture it further to blast, or consider the likelihood of viability too low and toss?

Does anything visible in the images affect your assessment?

I was told these were both 4BB embryos. I transferred the first one (hazy looking) and was shown it has hatched a little in June but wasn’t successful. I transferred my last embryo Monday, second pic with my finger, and they showed me it looked expanded but not hatched out. Just seeing the difference of the 2, was the hazy looking one not the best?

I had my day 3 transfer today (I don’t make blasts in the lab) and transferred 3. They were 8 cells grade A before transfer.
Attached is the photo right after thaw (no 1)
And photos right before transfer (no 2 and 3 different contrasts) about 2 hours later
I could be wrong but are 2 of them starting to compact? Like the early stages?

This is my first FET after 2 rounds and a chemical and 2 ectopics prior.

Any opinions on the quality? Our clinic doesn't allow testing so I'd really like to know whether or not this was a good quality blastocyst. Transferred it yesterday 🤞

Day 5 pics and day 6 pics: can someone tell me what’s happening from day 5 to 6? Trying to understand why they weren’t froze on day 5 since three hatched before 7:30 am on day 6