Hello Cca197,
I'm sorry to hear that. I think you are right - a herniated disc at L5S1 can cause such problems. So I wonder a bit why the doctors conclude that this is not the cause of your problems.... Did you have the problems before the surgeries as well?
As for the cramps - I know the problem - for me it is a problem with the nerves in the bladder itself. At the moment I'm lucky enough to be able to empty my bladder more or less completely, even if it sometimes takes a while. But I'm also afraid that if it gets worse, I won't be able to.
If it hasn't already, it might be a good idea to get a UD to make sure the pressure can't get high enough to cause kidney failure. Also, this may confirm the neuronal problems as well. When it comes to retention, even six hours can be critical in the worst case, depending on fluid intake. Residual urine can also cause problems. So until a urologist has said it's okay to do this, I wouldn't trust a GP or orthopedist.
I may be a bit overly nervous here - but a friend of mine almost died from kidney failure. He told that he didn't notice, suddenly tired and fell asleep. When his wife found him - he was already unresponsive. He was taken to the hospital by ambulance, and he was lucky. Maybe half an hour later and that would have been it. Since then, I have a lot of respect for situations like that.