I started my birth control Sprintec the Sunday (jul 29th) after my period started. I went out of town & forgot my pack & missed a week of pills, on the 6th of aug. I ovulated I had unprotected sex aug. 5,6,7,& 8th. . . When I got back I took 2 pills the 9th & 10th to catch up. On the 8th I started spotting then it got heavier it stopped completely on the 10th today, is just breakthrough bleeding? Could I be pregnant? Please help I need answers.!