Hi there. I had unprotected sex last Tuesday. He was inside me for about 3 minute but he did not ejaculate according to what he said because he does not usually Cm easily. It was rather an unplanned one therefore I did not take any birth control pills. So I trusted him and did not take contraceptive pills a day after sex. My period was due to start on the following Monday however it came three days earlier and it was like any normal menstrual days I have. However, my stomach has started feeling a little bloated(making noises as well) and I feel a little nauseous but not too serious on the fourth day of my period. Is this a sign of pregnancy or it's just wind? What should I do?