The "rawness" is what a yeast infection turns into if not treated right away. The next time you get put on anti-biotics, tell your doctor that you get yeast infections when you take them, and they'll give you one of those pills I mentioned to take in advance. I know this from experience :)
Oh, wait, so you're on antibiotics for the UTI? You can definitely get a yeast infection from that. I don't know what the bumps with pus would be though. Could be some other kind of infection. Even if it's just a yeast infection, the doctor can give you a pill that'll clear it up faster.
Nope, not a yeast infection. That causes red soreness and discharge that smells like...wait for it...bread. Go to the doc and find out what you do have.