95%: Plan B is 95% effective if taken within 24 hrs. after unprotected intercourse and does cause some irregular bleeding. The effectiveness decreases the longer after intercourse it is taken. Your symptoms could be due to the progestin in the Plan B or you could be pregnant. Check a pregnancy test 2 weeks after the intercourse and repeat it in 3-5 days if it is negative.
Answered 7/11/2015
2.6k views
Start with: a Pregnancy test! Often these are symptoms from the Plan B hormones however Plan B is not 100% effective...so make sure If your symptoms continue and your Preg Test is NEGATIVE, check it out with your Gynecologist! Hope this helps...Good Luck! Dr Z
Answered 7/13/2015
2.6k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question