My boyfriend and i have unprotected sex. We use the pullout method but sometimes he pulls out too late. during the period i calculated to be my ovulation period was one of those times he pulled out late. For nearly 2 weeks I have had cramping. Its low almost like period cramps. Also the other day i drank mountain dew and almost threw up. Then i took my medications and right before i went to bed almost threw up again. My period is due in a couple days so i guess i will find out then but i just want to know, could i be pregnant?