Help !!

I had a party on Sunday at my house, I drank more then I should have and smoked wayyy more then I usually do. I ended up having sex with my cousins ex boyfriend, and not only that, the condom broke. He said he didn’t cum but I removed being very wet under here. I don’t remember much of anything because I was way to intoxicated but even know what happened. To make things worse like I have said the condom broke and the next day I picked up from my bedroom floor the big piece of the condom, when I asked him where did the other half go, he said he threw it out, that doesn’t make sense to me because why wouldn’t you throw everything out instead of one piece of the condom. I feel discussing and gross, I would have never done that because I’m not that type of person. I hate myself. I wouldn’t take a plan B because I couldn’t buy them in the country I live. I wasn’t ovulating because I had just finished my period. It has been I week and I’m feeling really bolted and where my 2 ribs meet it’s been hurting. I’m really scared.