Help !!!!

So a week ago I shaved down there then went into the river and was on the back of a ski. About halfway through the ride I noticed my inner thighs up near my butt started to hurt very bad and when I got home there were bumps (almost like blisters) all over down there. It’s a week later and they’re still there very red with scabs over them. Any ideas on what to do or what it could be??? They won’t go away and they hurt and are super embarrassing. Can post a pic if needed. I am terrified of the doctors office so I want input before I have to go