Hello . M A Girl Of 24 Yr . I

Hello . M a girl of 24 yr . I had my periods on 30th oct and got over on 5th or 6th and i had unprotected sex on 7th with my boyfriend but ejaculation was all out ..from next day as in 8 or 9th m feeling nauseous at times even wen i get up in morning it stops at times and also from 1 day have continuous abdominal pricking and burning sensation in my abdomen...is dre any possibility i cud get pregnant or m feeling its indigestion as m having burbs as well ...plz revert back soon