All of this history makes me wonder - are you seeking all of your care through going to the ER and being admitted to the hospital? If so, is it the same place every time?
While it may seem like a good idea, intake through an ER often leads to treatment of the "presenting symptom" - whatever is worst when you are admitted, instead of a comprehensive health history and complete diagnosis.
Do you have a clinic and primary care doc, one place where all reports are being accumulated and analyzed?
Given the length of time this has been going on, it seems like it is certainly time to seek a major research and teaching hospital, or at least an Infectious Disease specialist, as others here have suggested.

You raised another question too, about getting a systemic fungal infection from eating mushrooms. This has not been known to happen. BUT there are plenty of poisonous mushrooms out there, which contain neurotoxin and other chemicals that can harm you. Many look similar to their edible cousins, which is why mycologists tell amateurs "If in doubt, throw it out! Do you have any idea what mushroom(s) you ate?

Sue