Could I possibly be preggers?

My fiancé and I have BD at 5 times prior to the week I ovulated and 5 times the actual week I ovulated. All of a sudden, my left breast has been sore, I have been passing a lot of gas, feels like I've had a little bit of cramping, and I can't wear my belt around my pants anymore because it's uncomfortable. My cycle doesn't start for another 6 days. Plus my stomach has been feeling a little weird. Could I be pregnant?