Donna, I see you wrote this a long time ago, don't know if you still want to hear about this or not. I have an 11 year old daughter who has had UTI's for 6 years. She had the same symptoms, bedwetting, smelly urine and also had all the tests done with them finding nothing. She is now on Nitrofurantoin. Low dose antibiotic) I was worried too about being on an antibiotic for so long but what can I do? I tried taking her off them but the urine goes back to being real dark and stinky so I don't have a choice I guess. good Luck!!!