v swollen after sex

Carol
Idk I've done it twice with this guy and every time i do it my vgg ends up really swollen. Last time it only lasted a few hours but this time it even hurts to pee. I googled it and it said its prob the result of having rough sex or not being wet enough. But i mean the sex wasnt that rough.... idk i just need help on how to relieve the pain and the swollen part.