Need advice about chronic infections

Hi everyone! I hate to ask but I am at my wits end. Long story short this has been a horrible year , in terms of my families health.  I had the flu and it turned into pneumonia. Needless to say they had to use really strong antibiotics because my husband had pneumonia for months prior to me.
After the antibiotics I gotta first yeast infection. They treated it but it wouldn't go away. I have been on diflucan multiple times, had boric acid treatment twice, been tested for diabetes, cut out sugar, and so on and so on.  I am now on a waiting list to see an infectious disease doctor because it will not go away! 
Has anyone had this problem? Or have any suggestions?
Thank you!