My vagina is red and swollen and there is kind of white goo. I also have a rash between my legs but I'm not sure they're related and it doesn't burn when I pee but the rash does burn. I have has sex a few days ago. And I think my period should be here anytime.

This does not sound good, please get yourself to a doctor for a proper diagnosis. We don't diagnose on AMHD. When your period comes, it isn't going to be pleasant with that going on.