I've had unprotected sex with my boyfriend during & after my period , i got off my period early & have felt naseus & crampy could i be pregnant ?

Conception & Period: When your period begins, your uterus is in a state that is incompatible with housing a fetus. The period between your period and ovulation (when you're fertile) is typically around 10-20 days (average 14) but can be variable. Thus it is most important to know when you had unprotected sex in relation to the start of your period.