I continue to have epicodes of Dehydration that comes on fast. Yesterday I vomited 3 times harshly, then felt better but was at an airport so EMTs arrived and hooked me up to heart machines, checked blood sugar, my blood pressure was so low that they couldn t pick it up easily. I was given a bag of fluids but then got diarrhea and again had red blood present in the stools. ????? This happens about 2 times a year. Usually following a migraine headache. Constipation is an issue for me, as well. It all is over in about 48 hours. Was taken off Ibuprophin last Sept. Still having the random rectal bleeds. Last August had upper GI, Stomach scan and Colonoscopy done in Roch. MN Mayo clinic. All tests came back clear. So random yet. so real and very scary when it happens away from home. We ended up going to Urgent care last night and the nurse practioner would not give another bag of fluids but gave me anti nausea meds and an antibiotic for CDiff., too.