Sounds like you might have both a yeast and a bladder infection. I'm in my 30's and I've had both at the same time twice in my life, but they are easy to get rid of. Be careful about hygiene especially during bathroom 'events'. I also would not use tampons as they can easily harbor bacteria. However, you need some pills from a doc to cure the urinary tract infection, no big deal, probably! Hopefully!
My first YI ended with a serious case that I treated myself and an allergic reaction to Vagisil. I'm scared that my newest case is a UTI.