I had unprotected sex a two days when my period ended also had sex in my fertile days .. can i be prego i get tired and nauseous frequently ?

Pregnancy: Hi, unprotected sex any time during the cycle= risk of pregnancy and the risk higher during fertile time, check a pregnancy test, if negative, recheck a wk after missed period again with early morning urine.

Yes.: Anytime you have unprotected sex there is a possibility of getting pregnant. Given your history, if you miss your next period, a pregnancy test would be warranted. However, you can't diagnose pregnancy on symptoms alone. If trying to avoid pregnancy, one should always use a form of birth control.