For one week, I had unprotected sex with my boyfriend at least 3 times a day. I was on the pill aviane, although it was my first month (3rd week into the pack), I took it exactly at the same time every day.

This morning I woke up nauseous and vomiting. I'm on the last week of my pack, the sugar pills, 3 days in, and still have not received my period. Could I be pregnant? Why haven't I received my period yet?