I have been exorcising much more often the past couple of days, so maybe that has something to do with my problems. First, I experienced black specks in my vision for about 20 seconds and one of my toes went permanently numb. Later that day I had a dizzy spell, and the next day I had foam for stool. Are these all random, or something serious? It is not dehydration, because I ve been drinking two quarts of water a day.