For about a month or more, I had frequent urination and then it went away. Now about after 2 to 3 weeks of being fine, its back again. I am going to the bathroom so often its driving me crazy. Even after I go, I still feel like I have to go more and its a pretty constant feeling of needing to go. At times it almost feels like there is something stopping me from finishing. I had an ultrasound done of kidneys and bladder to rule out kidney stones and it shows nothing wrong. I have had 3 urine tests done and those came back negative for any infection. I have lower back pain but dont know if thats related or not, no other symptoms, no pain, no blood in the urine. My labs are normal. The Dr handed me Detrol LA and said maybe overactive bladder but arent more tests supposed to be done to rule out other things first? I am a 47 yr old female. Does overactive bladder just come out of nowhere? I have had no problems prior to this. Do I need a cystoscopy or are there other ways of checking bladder problems as I had a friend who had that done and it was very painful for her. Any info you can provide will be appreciated.