I have had kidney stones and I did have back pain with them. Where is the blood coming from (urine? rectal? ileostomy?) I got the stones from being dehydrated. Have you felt dehydrated lately? Seems like something passed, then, when you ate dinner the pain reoccured. Is that right?
I don't think it would hurt to go to the ER. They can give you fluids and a Cat scan to see what's going on. I hope you feel better soon.
Ileostomy since August 2005.
As result of surgery (modified whipple) for necrotising pancreatitis. Removal of gallbladder, 2/3 of pancreas, resections of large and small intestines. Massive infection. 8 months in ICU at Westchester County M.C. (I think that's a record). Second surgery for resection due to fistulas in January 2007. Been slowly recovering since then. Possible reconnection candidate.