I have almost constant diarrhea with abdominal pain and discomfort. Also I experience pain throughout the body, mouth ulcers and flushing.
I hope this has not been happening for a long time because it sounds horrible. If it was only one day, with rest, drink plenty of fluids, eat PACT (bananas, rice, applesauce and toast) diet should be alleviated. If you have been going over a few days or gets worse, you need to see your doctor as soon as possible.