I can't really advise I'm afraid as I'm still going through this myself.
I have also sent a saliva sample off to a private lab to check for candida antibodies. This is my only hope for some sort of evidence to show my doctor.
I also had bones cracking especially in my neck when I looked from side to side. My spine would crack a bit too. All I can say is I can sympathise with you.
I don't think the nystatin oral drops are working for me although I must say my eyesight isn't as blurry and I feel I have more energy after eating.
At least your doctor is being proactive about helping you. My doctor doesn't know what to do with me.