After a mishap with a condom, I had my girlfriend take Plan B within first 12 hours after having sex. Due to allergic reactions she stopped taking BC beginning of November and has not had a period since. Is she still having irregular cycles at ths point? also, I heard even if you have a period after taking Plan B you can still become pregnant? How can this be possible?

4. January 2012

anonymous-qa

Pregnancy is always a possibility when two people engage in sexual intercourse, though the risk is significantly decreased when birth control is used.  By having your girlfriend take Plan B after the condom failure, you definitely reduced her pregnancy risk. 

Bleeding during pregnancy is possible but not very common. Implantation bleeding can occur in the very beginning of a pregnancy though it is usually much lighter and of less duration than a regular period – more like spotting. Since your girlfriend has not yet had a period since stopping her birth control, she may not have ovulated yet either. However, she will ovulate approximately two weeks before her next period, which could occur at any time. Right now, her cycles can be described as irregular, and may remain irregular for a bit longer because of the Plan B use. But as soon as your girlfriend’s hormones return to their pre-birth control level, her cycles should go back to the way they were prior to having used birth control.

Wait a month after the condom failure incident.  If she still hasn’t had a period, have her take a pregnancy test. Repeat the test every two weeks until she either has a period or a positive result. In the meantime, the two of you might want to consider other contraceptive options. If you are interested, we can provide you with information about all of your contraceptive options. Just call one of our offices.

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