Pregnancy Test: Plan B is only 50% effective at preventing pregnancy. While it is well known that Plan B can change your menstrual cycle, you must first do a pregnancy test to see if you are indeed pregnant or not.
Answered 7/12/2014
3.9k views
It may be BUT: Plan B works by hormonally interfering with fertilization of an egg. It is also possible that this type of emergency birth control prevents implantation of a fertilized egg in the uterus by altering its lining, and periods can become irregular, especially after its use. However, check a pregnancy test too. Best wishes.
Answered 7/12/2014
3.9k 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
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question