Miracles, by chance is yogurt one of the probiotics you have tried? Once, back in the day when I was healthy, I had about a month of diahwhatever -- not near as severe as yours, but enough that I figured I'd better start getting concerned. (my diet was good!) I started eating yogurt every day and it went away, pronto.
But then again, if this is something you've tried, then maybe you do have a dairy problem.
Bit 1972: Acute and chronic tonsillitis, UTI, miscarraige, appendicitis, hypoglycemia, chronic neck pain w/ crushed vertibrae, chronic severe back pain, mitral valve prolapse, depression, resolution?
Bit Mother's Day 2007: Lyme, Babesia microti, hypothyroidism, EBV, HHV6, Parvovirus B19, low adrenals &misc other hormones, depression, anxiety, more of the above.