Oh, Ali, big hugs! That is hard! I was there just a few months ago myself. What I ended up doing was delaying full out treatment because I was nursing. I would focus on trying to eat a low sugar diet filled with as many vegetables and good proteins and fats as possible while nursing and taking good probiotics without cutting all sugar out or starting antifungals … I say this simply because you don’t want to create a huge toxin release while nursing, so says my holistic prac. I hope your doctor can give you some solid guidance.
I did those simple changes while nursing and then when my little one weaned, I went all out with diet and slowly added more cultured foods and antifungals. I don’t know if this was the perfect course of action, but I did the best with what I knew. I hope this helps just a little.