sex help

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Today marked the day that I usually got my period. I lost my virginity two weeks ago today. We used a condom however it slipped off when he was pulling it out . He hadn't came yet and we didn't continue. Ive been pretty bloated. The past week I've had period cramps. I'm stressing about me not starting yet. I'm usually never late. Could it be from stress? Also is it normal for your period to be late after you lose your virginity?