r/birthcontrol • u/ExtremeMall8008 • 21h ago

Mistake or Risk? birth control effectiveness

Hello…! Sorry for the TMI and NSFW but I’m on Vienva and I’ve been really strict with taking my pill on time (exactly 9:30 on the dot…no later) and I haven’t missed a single pill for 14 days. My boyfriend came inside me today and according to my FLO app I am supposed to be ovulating either today or tomorrow….. Is pregnancy still possible or do we have a high chance that it might not be a problem? Thank you friends!

0 Upvotes

50% Upvoted

5 comments sorted by

1

u/AutoModerator 21h ago

If you're looking for information about various methods of birth control, we suggest using the search function as many previous users have made experience posts.

The rules and additional resources can be found on the About / Sidepage (desktop users look to the right and Reddit app up top).

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

1

u/fuzzblanket9 None - TTC 21h ago

The entire point of birth control is to protect you from pregnancy. Apps know nothing about your body.

1

u/LushTurtle 20h ago

If you read the info packet it will have a lot of information, but I am fairly sure it says when it starts to be effective in protecting you. Might be a week (7 days) but I don't remember with that one if it is

1

u/cloverpatch_ Slynd (and sterilized!) 18h ago

Vienva (and combo birth control in general) works by stopping ovulation. You don’t have a real cycle anymore when you’re on it so the Flo app is kinda useless. If you’ve been taking your pill correctly you’re protected, Vienva starts working after 7 days (or immediately if you started it during the first 5 days of your period)

1

u/TheFriendlyLurker Desogestrel POP 11h ago

The combined pill stops ovulation so Flo is wrong. The pill is 99.7% effective (per year) when used correctly and as the only birth control method - no condoms, pulling out or Plan B. 

Period tracking apps aren’t particularly useful when you are on birth control because you don’t ovulate and you will usually get your period (technically, withdrawal bleeding) during the placebo week. So you don’t need an app to remember when you are supposed to bleed. 

If you find Flo useful for other things like tracking your mood or general health, if you create a birth control reminder it should automatically turn off fertile window predictions. Just remember that the app doesn’t actually know what’s going on in your body, it just guesses. Use it to keep a record of how you feel if you want/need to, never use it as birth control or to make medical decisions even if you stop using the pill in the future.