Vaginal tear re-opening

Maude • •👼🏼C 💙•H🌈•B🐻

I’m 9 months pp. but every time I have sex, after it burns. Yesterday I looked at it after and I have a large cut. I think the tear I had when I gave birth is re-opening. When I had my son they said it wasn’t bad and didn’t even need stitches. We waited 9 weeks to have sex. Sec has been painful since him. I didn’t go to my 6 week appointment because we moved. I’m curious if anyone else had something like this happen… what did your dr do?