I have fever of 100.8, my left kidney is a little painful today. My urine is not cloudy & no foul odor so im guessing its not a uti. What could it be?

UTI or common cold. When you say your kidney, I'm presuming you're referring to your flank area! UTI doesn't necessarily need to be cloudy or have malodorous features. Medical problems don't necessarily present textbook style. However, you could have a general cold, viral in nature, with muscle pain (myalgias) and it happens to be located where your kidney is. I would have it checked out either way!