Greetings, you will find a lot of help on these forums but by the sounds of it you are having problems already and it's in the family I wasn't able to get it tested by doctors but am well on the way to recovery now after 2 months of work. In a way i know when i got it bad as i get it on my penis and can see it although the real debilitating problems occur in my gut and i've developed some sensitivities to wheat, white rice and other foods.
Do the full cleanse and change your diet take the anti fungals and supplement with good quality probiotics and you will see improvement but it might take months. I thought it was all mumbo jumbo but after my health changing so rapidly i believe it can be done. There are sufferers on here much worse off than me though that can help you