Emergency Contraception (cont.)
Omnia M Samra, MD
Bryan D Cowan, MD
Francisco Talavera, PharmD, PhD
Lee P Shulman, MD
IN THIS ARTICLE
How Emergency Contraception Works
Emergency contraception prevents pregnancy by stopping or delaying release of an egg (ovulation), blocking fertilization by affecting the egg or sperm, or preventing implantation by making the lining of the uterus inhospitable for pregnancy. Pregnancy is defined by the medical community as implantation of a fertilized egg in the lining of a woman’s uterus, so emergency contraception works before pregnancy has occurred. A pregnancy test is not useful because emergency contraception is used to prevent pregnancy rather than to abort an existing pregnancy. A woman who uses emergency contraception will never know if a pregnancy would have otherwise occurred. Fertility returns with the next cycle unless a birth control method is continued.
In order for emergency contraceptive pills to be effective, they must be taken as directed.
Must Read Articles Related to Emergency Contraception
Find out what women really need.
Women's Health Resources
- Top Diet, Fitness and Beauty Tips
- 7 Things You Should Know About Your Vagina
- Better Skin After Menopause
Health Solutions From Our Sponsors
Pill Identifier on RxList
- quick, easy,
Find a Local Pharmacy
- including 24 hour, pharmacies