Keep in mind that the morning-after pill is good only for the preceding incident of unprotected sex. Consequently, it will not provide protection for unprotected sex after taking the pill. Users of the pill should resume regular birth control methods. The pill may delay a period by up to a week. If it does not resume after that, take a pregnancy test.

Any bleeding or spotting issues after using the morning-after pill that lasts more than a week or severe abdominal pain that develops within three to five weeks after taking the pill should be checked by a medical professional. Symptoms could be a sign of a miscarriage or ectopic pregnancy, the latter a pregnancy where fertilized eggs implant outside the uterus in a fallopian tube or other location. That condition is potentially life-threatening.

Pill-Free: The Copper IUD

The copper IUD option for the morning after is sold under the brand name ParaGard. It must be used within five days after unprotected sex.

ParaGard is inserted into the uterus and provides long-term birth control beyond the period after unprotected sex. It is a T-shaped plastic frame that has copper wire on its stem and two copper sleeves that continuously bathe the lining of the uterus in copper, which creates an inflammatory reaction that is toxic to sperm. This helps prevent fertilization and will prevent implantation on the uterine wall.

ParaGard can prevent pregnancy up to 10 years after insertion but can be removed at any time. It can be used while breastfeeding and decreases the odds of endometrial cancer and potentially cervical cancer. It also has fewer side effects than hormonal birth control.

Some women should not use ParaGard. Those who have uterine abnormalities that interfere with retention of the device or its placement are not good candidates, as are those who have existing pelvic infections, including pelvic inflammatory disease.