Yes its possible to have Candida in my gut without knowing it, but I took about a month of systemic anti-fungals. So if I had candida anywhere Im sure it would have been affected.
And like Sirpreis says just because a few people who have EC have seen candida, even though I really havent read about many, doesnt mean that it is caused by candida. The only people who I have read about who have candida, which again is very few, have said that their doctors think it is secondary.