Big Problems

On Sunday I got juicer from a friend. We made about 40 oz. of juice using beets, carrots, spinach, ginger, grapes. Like an idiot, I drank about 32 oz. over about an hours’ time. One hour later, severe cramps started developing. I was soon doubled over with severe pain that, I am not joking, lasted 7-8 hours. I do not take the pain scale lightly, and this was and 8-9. Very close to calling 911. It is now Tuesday, and I am still having stomach issues. Not as bad as it was, but something is not right. In addition, I have not had a bowel movement since Sunday morning. You would think that I would have had diarrhea or something by now. I am not sure what to think. This is all on top of the fact that one month ago I had follow-up surgery to straighten out my guts that had twisted up since my esophagectomy on September 1st 2011. My health has been relatively good other that the stomach issues and the fact that I still have a hard time getting food past the “connection” site of my old/new “esophagus”.
Is it possible that the overdosing on the raw vegetable juice could cause so many problems? Scary.
I have a follow-up meeting with my surgeon tomorrow, so hopefully he will have some insight.
Has anyone had any sort of similar experience with juicing?
Don’t get me wrong, I am still freaking grateful to be alive, and I will get through this, but sometimes the EC and its little friend-side effects piss me off.
Any insight would be appreciated.