Hi Emm, your descrption of needing to go, going in small amounts else getting back pain really describes a UTI but one that is hitting up into your kidneys. I have had many UTIs and I had reflux of my ureters (urine was flowing backwards up into my kidneys) so when I got UTIs I also got bad pain in my back, which is kidney pain. I think you should see a doc and get tested for a UTI (again), as one that gets into the kidneys is quite serious. Even though I had an operation to fix the reflux, I still find that even not having a UTI means that if I need to go to the loo but hold off I can get bad back pains...I am sure that it is urine flowing back into my kidneys making them sore.

Hope I haven't scared you!