ok my question is this, i start taking birth control for the first time ever on july 16th i got my period on the 14th after that i missed my pills on the 20 th and the 21 st i took 2 pills on the 22nd,  on the 24th i start bleeding again first was light red and then brown so i got scared and stop taking the pills on the 29th and i still had one more week to take, so my question is can i be pregnant?  and when should i expect my period again? also i had a pregnancy test on the 6th in the afternoon but it was negative, im soo confused cause i dont know if i was ovulating or not also i had unprotected sex from the 20th until the 5th a couple of times a day.