I am sorry to hear you are going through all this. I too was exposed to toxic mold and it has been a struggle with fungus and mold.
I will tell you one thing that really helped me and I say me because I am not telling you this will cure you, but I am sure it will help you to breathe better and it is natural. I went to a salt room. The problem is there aren't too many in the U.S. Not sure where you are located. Just google salt caves and see if you can find one. It helped my lungs and I don't have the breathing problems I had. I was skeptical whether the salt cave would work, but after only 2 sessions I knew it was going to help as I was getting a bit of relief. I went for many sessions a week. Sometimes twice a day. All you do is relax in a lounger and breathe salt into your lungs. I am still fighting the fungus and mold in my body though.
I am trying a parasite cleanse at the moment and hope it really helps.
There are many natural things you can do and i am sure people will see your post and give you some good natural recommendations.