Multi - ways: Birth control pills work in many ways depending on the type (ie Progesterone only or combination pills). The main function is to stop ovulation from occurring. If no egg is released then there is no egg to fertilize. If this fails and an egg is made and released - the secondary defense is thinning the lining to prevent embryos from implanting. They also effect cervical mucus.
Answered 9/23/2020
5.1k views
6 doctors weighed in across 2 answers
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