With a uti what should i avoid? what food? and could i take a pain killer? if so what kind

Uti's & food: Uls are not aggravated by diet, however painful bladder syndrome may be. These folks should avoid acidic foods and stay well hydrated.

Spicy foods,caffeine: Acid urine producing beverages & foods such as oj, tomato sauce etc. Drink plenty of water. Pyridium (phenazopyridine) can relieve burning & Ibuprofen in adequate doses can relieve pain. Good luck.