I've been having a problem with a possible UTI. I've had a UTI before and I experienced the burning pain, smell etc. And I've been treated for them a lot. recently, I've had what a doctor told me is a UTI that doesn't burn, and the only problem is that it smells. I keep going back and they prescribe me medication but it never goes away. My urine has either a fishy or chemical smell but it never burns when it happens. Sometimes a tight pain as it comes out, tense in the lower back and tiredness?