Sex 6 x a day

Ok me and my bf have sex up to 6 x almost every day. I am on birth control (ortho tri cyclen lo ) and I've been on it for 2 months now. Sometimes we may do it 1 or 2 times depending on the day. On my second month taking the pills I started heavy bleeding like a period on the end of wk 2 going in to wk 3 pills. Could thatve been my period? Bc on January 13th I started my period, and I am on my last green pill and have not started my period yet, even tho the 13th is tomorrow. I've taken 3 pregnancy tests and they were all negative. Could that bleeding be my period or should I be worried. Btw he never comes inside of me.