I keep getting on and off strong pains in my back, it's mostly in my kidney area I think but kind of…

I keep getting on and off strong pains in my back, it's mostly in my kidney area I think but kind of all over? I know that is very vague, but has anyone had this? I know I haven't got a UTI as I had my urine checked the other day & I drink SO much (it's also light in colour, odour free, and no discomfort) xx