Pregnancy or Period symptoms?

i had sex with my bf 2 weeks ago, i was on my period, it was the 4th day, as soon as he was about to come inside me he came out of me, he said he had cum on my stomach but there was nothing on my stomach, he sed it must b on the bed then, after i came hme my period had stopped, usually lasts abt 6-7 days, then a week later i start feelin cramps n things iv neva felt, like i feel sik everytime i eat sumthin, experience bad stomach pains n vagina pains, i usually feel pains like this on my first day of period or 2 days before it, i hav 2 weeks left 4 my period though, do u think i can b pregnant