mark, I too was in a similar situation, not with drugs but oral sex.
I have had many probs in the last 3 years, including pancreatitis (painful), my stomach did same thing, and i lost 30 lbs from diarehaa, severe fatigue,
some docs think i have undetectable hiv and others think its just a "unknown virus" not hiv
its scary, i still have a constant cold and short of breath, and diabeteic now also,
i go to boston and they are at a loss