I have been on birth control for 5 months and taken it correctly for all five, but I recently went to stay with my boyfriend for the weekend and forgot to bring my pack with me. I missed two days of pills, and we had unprotected sex twice. However, he pulled out both times and never came inside of me. I took two pills each the next two days to make up for the missed pills. It is now the week of pills that I should be having my period, and I have not yet started. Is there a good chance that I'm pregnant?