I thought I had a cut between my vagina and butt area and it burned a little to pee but now it got worse and I think there are bumps and it burns in that area when pee hits it and it hurts to wipe. I can't go to the gyno for a couple days but I'm freaking out and want to know what it is !

We are not doctors. Could be a lot of things, skin infection, rash or something else. Wait for the GYN.

Yes, the salt in your urine is irritating it, rash, cut or whatever. You could have scratched that area with your nail while wiping. It doesn't take much. Yes, wait for your doctor but I