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What would be my next period date?

By March 16, 2010 - 3:49pm
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I had my period start on Feb 12th and end around the 16th. I had sex on the 18th and the condom broke without us knowing and he went inside me. The next day (19th) I took Plan B. A week later on the 22nd I got what seemed to be like a period but brownish red and a little different and lasted only a couple days. We had sex again without using a condom and we may have slipped. My question is do I count what seemed to be like a period on the 22nd? Or... Do i count what my usual period day is..the 12th. (I am refuring to my march cycle. I need to take a pregnacy test to make sure I am not and I don't know the day of my "missed period".)

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Hi, ecabb10,

The problem with Plan B is that it does mess with a woman's cycles and sometimes makes it really hard (like in your case) to figure this out.

The safest thing to do is to do both. Treat the 12th as your usual period date, and if you go a week late from that date, take a pregnancy test. If it's negative then (and it sounds like it will be), then treat the 22nd as your period date, and if you go a week late from that date, take another test. Again, it will most likely be negative. Because Plan B is a hormonal pill, the effects are individual from woman to woman. But that "period" you had after you took it should have been the uterus sloughing off the blood and tissue that would have been built up in case a fertilized egg had arrived. Because of that, any egg wouldn't have implanted; that's how Plan B works. So it sounds like you aren't pregnant, but that your cycle may be a bit "off" until you get the next one and get back on track.

Does that help?

March 17, 2010 - 8:55am
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