I m on the birth control pill and I didn t have it for a week and had unprotected sex using pull out method july 4th got my period the day started bc pill july 8th after 4 days later had dark brown discharge then turned into dark red and then pinkish then back to dark brown off and on had unprotected sex 1 or 2 times during that the discharge lasted 8 days,started my pill so didn t think nothing of it had more unprotected sex. I ve had days where I took my pill late,got my period aug 2nd started out dark brown then dark red one day had light red blood my period only lasted 3 days and was light and mostly brown,do you think this is from birth control pill or could I be pregnant?