I have been getting dizzy all day today, at first, just when I stood up. Now, I am dizzy even just sitting. I feel nauseous at times, experiencing some belching. I know I have a UTI, but I ve had lots of them over the past years & have never experienced dizziness w/ them. I have an appointment in a.m. to see Dr. for the UTI, so I m not on antibiotics yet. This dizziness has me concerned.