i masturbated then had a swollen spot then went swimming in a public pool. after swimming i noticed having discharge which were stinky. I also became swollen down there that to the point it was so difficult to walk. It has been weeks, but it still painful. But the pain decreased the vagina is a little bit red and no discharge now which is not normal. also sometimes itchy. Please help, It's not possible to get a std from that right? im not also sexually active has never done oral, anal, vaginal.