OK, I'm going to suggest that you
do have LS - Lichen Sclerosis - and refer you to
my previous advice in its entirety.
LS can - quite often does- coem and go. What you describe is entirely consistent.
What I previously described covers the matter of "Thrush" (Candida) as a complication. I did however
revisit the topic recently, but only to provide another, perhaps clearer, summary.