I got my last period the week before May 11. I started taking birth control the Sunday after my period (The 13th) and I was pretty inconsistent with it. My boyfriend and I have been having sex, but always with a condom. The condom has never broken. I started taking birth control on a strict schedule again two weeks ago but I still haven't gotten my period. Could it be because of my inconsistent birth control, or because I could be pregnant?