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alright so i thought that period=not pregnant. i definitely researched and took precaution before becoming s_xually active. BUT, i had s_x last time in the heat of the moment with no condom with my fiancee. (so STDS aren't a problem. we're both clean :)) i was on birth control, but i know that it's not a totally safe form of protection. Anyway. I started my period literally an hour after we had s_x, but it was REALLY light and lasted only a few days. I don't THINK that it could indicate pregnancy, but i'm not 100% sure. Another thing to note is that my birth control also serves as a regulator for my periods. i'm very small with a low body fat % and i never used to get my periods monthly. Ever since i started birth control (caziant) i've had my period almost the exact same day every month, and it lasts about 5-6 days. It was on time, but SUPER light. Am i just being paranoid?