I've had a lot of UTI's, last one was just a few weeks ago. One thing to do when you take antibiotics is, also take a probiotic. I like the Probiotic pearls. You can develop C-diff if the good bacteria isn't replaced. I also like picking up some $1 uti tests from the dollar store so I know whether to go to the doctor for certain symptoms. If you get yeast infections with antibiotics, ask for a diflucan pill.
Definitely take the antibiotics they give you, you don't want it developing into a kidney infection!