Yes I have been through this in 100 + yr old guest house I lived in.
Waithwyrt ( excuse my spelling) is correct the wood in bathroom needs ripping out!
Yes most definately sounds like you have symptoms of mold poisoning. Being that you already have weakened immune system it is even more hazardous to you. I had numerous bronchial infections when I first moved in and just got sicker and sicker. See an environmental health specialist because regular dr's don't know shit about mold and may possibly mistreat you and make matters worse.
This is serious. Get out of environment until remedial work by exerts is done!!! Find dr who specializes in mold and environmental illnesses ASAP.
Avoid sugars, starches, dried fruit and mushrooms. These feed the mold illness.
An LMT who survived severe mold poisoning that almost killed me ten years ago and have researched mold for ten years now.
Ask me ?s if you wish.