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.
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.
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 :)