Is it a possibility that i'm pregnant?

My boyfriend with drawled but it still got on my . I was on the pill for a week before this happened, but i have been on birthcontrol before but i was off for a month. For a few days I was almost positive i was, i had all the early symptoms. But then i got my period, and went to the OBGYN the next day. He did say anything was wrong but then again i didnt ask him if i was pregnant. Its not a normal period. im on birthcontrol and im not supposed to get my period at all. is it possible i could be pregnant?