Q: I took Plan B and was on birth control pills, but I think I ovulated. Could I be pregnant?
- Myeongchan Kim
- Sep 11, 2025
- 2 min read
Updated: Sep 21, 2025
This post is a dramatization of a question and answer session experienced by our actual medical reviewers. Please note that this content is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.
Question: I am a 31-year-old female with three children, currently taking Zoloft for anxiety. I'm concerned about a possible pregnancy and need some guidance. Here is a timeline of recent events:
* May 10: Period started. * May 14: Mirena IUD was removed after one year. * May 17: Had unprotected sex and took Plan B one hour later. * May 18: Started taking oral birth control pills. * May 22: Had unprotected sex again. Ovulation tests showed a peak, indicating I likely ovulated around this time. * May 23: Stopped taking the birth control pills out of concern for a potential pregnancy.
I am now 9 days past ovulation (DPO) and all my pregnancy tests have been negative, although with my previous pregnancies, I had faint positives by this time. Given that I took Plan B and was briefly on birth control pills, what is my actual risk of pregnancy? Why would I have ovulated? Should I continue testing or can I assume I'm not pregnant?
Answer: Honestly, It's hard to give exact odds because of all the variables: - Plan B reduces risk but isn't foolproof, especially if ovulation was already close. - The birth control pills likely weren't in your system long enough consistently to prevent ovulation or pregnancy. - Mirena removal (5/14) can also mean your body is trying to get back to its natural cycle. - Zoloft: Generally, Zoloft doesn't interfere with Plan B effectiveness or pregnancy test accuracy.
So, do test again in a few days if your period doesn't start. hCG levels roughly double every 48-72 hours in early pregnancy. If your period is late or you get a positive test, definitely see your doctor to discuss everything, especially since you stopped the birth control pills due to pregnancy concerns. They can confirm and provide guidance.
It's a waiting game right now, which is tough with anxiety. Try to hang in there. Keep testing as you planned and touch base with your doctor.
For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.




