I was feeling perfectly normal all day. I also drank about 32 ounces of water in the morning. I went to work and was passing meds (as a CNA) and suddently, abruptly, within a period of about 30 seconds, I was feeling like I was going to black out, beads of sweat were coming down my forehead, I felt clammy all over, and I started shaking. I went to the bathroom immediately and felt like I would throw up but that did not happen. I did, however, have a bout of normal stool and then about ten minutes later a lot of diarrhea. I had intense lower abdominal pain as well as pain along my upper thighs. I have since gone home and took a hot shower and am laying down. I now have upper abdominal pain, but the other symptoms have abated.