A.C.
I am so sorry. What a horrible mess. I agree with the others. You need a professional as soon as possible. Don't waste time. There is nothing you can do on your own to stop it. Especially since it is coming UP the walls, the mold could be in your subfloor. We had this in a bathroom once (at a rent house) where the walls were moldy and bubbling and it turned out to be the subfloor (from a leaky shower), and it was a major process for a pro. to fix it. We also had bubbling walls at another rent house in the bathroom (again) and once again it was due to a wet subfloor (from a leaky toilet). My brother had moldy walls at his house and it was due to leaky pipes behind the walls.
By the way, I also get itchy ears from mold.