What is the cause of my bladder pain and urgency?

Ok I know everyone is thinking, UTI or Infection. It's not that. For my entire life I've had problems with not being able to make it to the bathroom sometimes, Dr's say it's not overactive bladder though. I will get cramping and spasms around my bladder then just have to run! If I'm asleep, sometimes I will wake up already going or wake up with a terrible stabbing sharp pain and run, once I go I'm fine but then I get this really bad cramping aching dull pain in my bladder and lower abdomen for like an hour. I cut down on caffeine products and my tea since I've read those make urgency worse, but I still have an issue. Sometimes when I'm asleep if I don't make it to the bathroom on time I'll remember that I was dreaming of going to the bathroom, while I"m asleep. ????????