SEX PAIN PLEASE HELP

So my boyfriend and I were having sex I was on top of him and after cumin we got into doggy style and I don't know what went wrong but after i cum it was like my vjay locked up on me it hurt instantly I couldn't get up .I was stuck to one side for a while because my stomach was cramping ,I couldn't separate my legs and relaxing my body muscles didn't help too much either once I was able to get up I thought I hot shower would help but I didn't really do much I'm still in pain and i tried to pee and i couldnt its like i have to pee but i cant .I'm not sure what to do or what I can be I think muscle spasm or I pulled something. SOMEONE HELP PLEASE .