Re: How doctors think:::
LOL yeah that's what you get for being an informed patient.
He's not that bad though, I have had a doctor call the police on me LOL
You may be infected with Blastocystis, Isospora or another protozoal. Remember, protozoals are among the hardest to diagnose among pathogens. They only shed cysts on some days so microscopy only works reliably on fresh purged matter.
I suggest you do the old style triple therapy and get rid of whatever protozoal you have. The nitazoxanide/furazolidone/secnidazole combo is extremely broad spectrum and has a good chance(80-+90%) of curing you for good. Higher if you combine it with impovised garlic solution. Short of taking emetine or dihydroemetine(which are both unavailiable), this is the best you can do.
Btw, I have just ordered a metametrix test(got it from Nordic Labs without a doctor) myself. I'm going to send it in on monday. I'm not too optimistic about pinpointing the name of the protozoal but I at least want to try it before I do the triple cocktail.