What Causes Painful Cramping And Spasms With Tight Painful Abdomen?

I feel two years ago on concrete right onto my torso, so chance to try to break the fall. Ever since I've been in ER's, hospitals trying to figure out the very painful cramping, spasms. The abdomen is always tight but the pain starts and lasts for hours. I have to lay down to calm it and that doesn't necessarily do it. That's when I go to the ER for pain medicine. I have been to every hospital in St Louis with no one agreeing on a cause, first RSD, Intercostal. Even Cleveland Clinic. No one can figure it out. So I have given up a lot of things I normally have done,.,.golf, lifting grandchildren. I can only walk so far without it affecting my stomach area. Any ideas. It originated with a fall. Shouldn't that give someone a clue?