I have been taking Tri Sprintec 28 since April of this year, my husband and I are TTC so I stopped taking my birth control on Friday (10/23) we had sex Saturday night (10/24) after 9 PM which is when I take my BC, so basically I missed two pills, could I become pregnant? I started withdrawal bleeding the Sunday (10/25) after we had sex, does that mean I'm not pregnant or will I still have withdrawal bleeding and possibly be pregnant since I stopped taking birth control? Any answers are greatly appreciated, thanks!