When used as EC, these hormones disrupt the natural hormone patterns necessary for pregnancy. Some evidence also suggests that the hormones change the lining of the uterus. EC is less effective than a continuous or pre-planned method of birth control, but they are the most effective method available after you have had unprotected intercourse. EC must be used no later than 3 days or 72 hours after unprotected sex or effectiveness is greatly reduced. Your provider will give you a package of 5 Alesse pills to take now and 5 more to take in exactly 12 hours.
Most young women can use emergency contraception.
Make sure to tell your health care provider if you have ever had unexplained vaginal bleeding, a stroke, blood clots in your legs or lungs, unusual headaches or medical problems like liver disease. EC is safer in women who do not smoke. Your health care provider will take your blood pressure and do a pregnancy test to make sure you are not already pregnant. If the test is positive, EC will not be given. Nausea is a common side effect with EC and can be diminished by drinking milk or eating at the time you take your pills or just after.