I have taking cortislim for the past 3 weeks. About 3 days ago I had a sharp pain on the left side of my stomach. The next day it got worse, and my back started hurting in about the same spot. Yesterday I went to the doctor, and he asked me if I have had a bowel movement, and I told him that the first few days I didn't have much of one but that day I did. He said he really didn't know what it was, and gave me some medicine to take called cipro hcl. I am still hurting today. I did stop taking taking the cortislim for just a couple of days, other than that I don't know what it could be.