@Moldova - I wanted to say that I had food poisoning a few months ago and the doctor said that it was infectious colitis. It must have been as a result of Ecoli present in the food I ate because shortly afterwards I was feeling pretty bad.
I did not experience any blood in my stool, but I had all of the other symptoms. The pain that I experienced was really severe in fact I almost went to the hospital because it was so bad.
I did go to the doctor and he told me that my white blood cell count was really high and he ordered me to get more fiber in my diet and gave me a prescription for Flagyl.