Hi all!I've been reading a lot lately on the site and would like to appreciate everybody support. My doc diagnosed with IbS-CI've had this abdominal pain for about 6 mo now, but now after taking some antibiotics Levsin and Bentyl I feel even worst. I have for about 1 mo these spasms in my colon constantly especially in my lower right.I've taken barium enema test, colonoscope, x-ray, blood tests and etc., now my doc took stool test to check parasites and blood, so far he can't find anything. Hovewer, since then I started seeing him I feel worst. I made another appointment with a different doc, but I have to wait 1 mo for that.I had constipation problems before, since started taking fiber con and fiber friendly diet it went away. But these spasms on my lower right and upper right as well upper left really bother me. I think I might be allergic to antibiotics. I am just afraid it might be a colon cancer or ulcer colitis instead of ibs. I lost about 20lbs and I don't have appetite often lately.Any of you had such symptoms before?Tell me if I should do biopsy test, I think it would not hurt. I've taking some Caltrate and Acidophilus to kill backteria, but that does not seem to help. First my doc found H pylori backteria in my blood test, when I asked him to check my blood again he said it would show backteria then again. Weird hu? Should I insist on another blood test?Any advice? Also if anyone knows a good doc in San Fran please let me know.Stay strong!!!