down there prob.

hey girlys i got a question. well me and my bf were together sat. and we ended up having rough sex and idk if it was to do with my prob. but i started bleeding while we were having sex and i think its due to the weewee hitting the cervix to hard anyways now 2 days later i have a very bad smell and its really strong no matter how good i wash it it doesnt go away has it happened to anyone else any idea why it happens?