I agree with above. You do need to see your doctor at this point. If you have an UTI, you need antibiotics to treat this. good luck dear
It could be or it could be a vaginal infection or something else. I know some people are prone to UTIs and find drinking cranberry juice or taking cranberry pills beneficial to avoiding them.
UTIs are caused by bacteria getting into the urethra. This can happen through sex (always pee and wipe afterward), and often in younger females, by wiping the wrong way (back to front instead of the proper front to back).
Good luck!