I am on my second month of birth control, and have unprotected sex. I always take my pill on time, everyday. The first month I was extra moody, tired, and felt nauseous. This month, however, I don't feel nauseous, but I do feel like bloated, and slightly constipated (sorry if that's tmi) and my left ovary started hurting about 3 days ago. Also my cervix is hard and short, and i don know why, because its only week three of my pill pack.These symptoms make me feel like I could be pregnant. Now there was one time where I got sick and threw up about 3 hours after I took my pill, could this have made me miss a day? If so, could I be pregnant?