hello i am 15 and do not pretend to have a baby. this month my bf and i had unprotected sex and he almost came,outside of me and then he went to the bathroom cleaned himself and peed and then he went inside of me only for 5 strokes. My period is currently 1 day late, i have a 36 day cycle and i do not experience any symptoms aside from sore nipples when they are hard sometimes. Yesterday i tested and it was negative. please help ive never experienced a late period as im charting it since january