I had bad spasms after my first TURBT. We were told that based on the location of the tumor being near a certain muscle that the spasms would be somewhat worse. For me movement seemed to set the spasms off. The first day or two after surgery I couldn’t even switch sides in bed without spams and pain. I went home with a catheter in place and there was a huge improvement when it was removed (about 5 days after surgery) but then after 2 good days some of the pain and spams came back. Slowly it got better and by the end of 2 weeks I could finally stand long enough to do some basic things like make dinner or some light vacuuming without paying afterwards with spasms and pain. Evenings seemed worse with more pain as the day went on. I found laying still with my legs slightly propped up on a pillow under my knees helped a bit. It must be frustrating to still have this happening after a month, but they say it takes six weeks for full recovery, so hopefully it will get better for you soon.