Worried

Hope
I'm friends with benefits with one of my closest friends and we have had sex a lot this week. We mostly used the pullout method this week because he accidentally got the wrong size condoms. Everytime he's came I've always felt it on my stomach and he is 98% certine he has not come inside me but I just get anexious and I was wondering if it's normal and what emergency pill should I take because it's too late for me to take Plan B.