I am a college student and its been a month into my year. The first week I had a lot to drink and had thrown up for the first time in a while. Ever since then certain foods make me very nauseous. Subway is a big one. My boyfriends been here a lot and weve had sex a lot but im on birth control and hes never finished in me. Im worried this may be a health issue but Im looking for your opinions on this. No negative comments please.