Using the morning after pill was smart thinking. Even if the guy does not ejaculate inside, pregnancy is still possible because of pre-seminal fluid (also called pre-ejaculate). Pre-seminal fluid leaks out of the penis prior to ejaculation. Sometimes this fluid contains sperm that is left in the urethra from a previous ejaculation.
Plan B works by delaying ovulation (the monthly release of an egg), and possibly by interfering with fertilization (the union of sperm and egg) and implantation (when the fertilized egg implants itself into the uterine lining). If you are already pregnant, it will not terminate the pregnancy. Plan B works best if it is used within the first 24 hours after unprotected sex. Since you used the morning after pill in a timely fashion, you will receive maximum effectivenss. Unfortunately, it is not a guarantee that you won’t become pregnant. According to the manufacturer, the treatment prevents seven of eight pregnancies that otherwise would have occurred.
One of the most common side effects of Plan B use is menstrual irregularity. Therefore, your next period could be earlier than usual, later than usual, or spotty (meaning you may bleed for a few days, stop, and then bleed some more). However, if you are a week or more late for your period, take a pregnancy test. If it is negative, repeat the test every two weeks until you have a normal period or a positive test result.
Plan B should not be used as a regular method of birth control as it is less effective than other methods. If you are going to continue to have sexual contact, you may want to think about using a regular form of birth control. If you live near one of our offices, please call us for an appointment to discuss your contraceptive options. If you live further away, contact the Family Planning or Planned Parenthood office closest to you.
24. April 2012
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