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My period comes every month on the same day regurlarly, with the exception of this month. In the month my llife has been very stressful, i have also heard stress can cause complacations with your period. I am also on antibiotics for strep throat which i know can conflict with your birth control. So any time sence i began taking the antibiotics my boyfriend and i have been extra careful(even tho we always are careful and use pretection). I dont knw if any of that is true about stress and the antibiotics messing with my peroid or if i could be pregnant, so i am asking for anyones advice it would be GREATLY appericated.