Hi, five and a half weeks ago I fell off a rubbermaid two step foot stool and landed on my tail bone on a ceramic tile floor, and then hit my whole back on the floor as well. The pain was quite severe, but exrays showed no fracture. Yesterday and today I passed stool with bloody mucous mixed in. I have food sensitivities, and also one year ago travelled to China. At the end of my trip I had one night of severe vomiting, and several days of diarhea. I have stool sample tests to do over the next few days. Could the mucous/ bleeding be from the fall? Are parasites a more likely cause? Screening blood work is normal, but B12 has dropped by 1/2. I am pale, tired, and don't have much appetite.