Bemmer, I feel for your worries! Someone else already suggested what I was just going to write: can you buy some anti-candida products first, and make sure to take them at the same time as the Antibiotics ?
And during, or starting near the end of the Antibiotics regime, start taking Probiotics and eating lots of yogurt then also to replenish the good guys.
There are only a few of us here in Curezone doing or thinking of doing the special Antibiotic program that you have (for blastocystis or D. Fragilis) - I've been reading your posts regularly and want you to know that I'm rooting for you.
I can't start my own program yet - had a sudden dental infection recently that set my health back, so it may be another month before I'm ready to take anything strong again. But it's in the plans.