I have the same thing. The apartment I rented was built 100 years ago and the floorboards were wide open and we would step on them and they would squeak and dust would shoot up every time we took a step and we didn't know what it was.
We had the chest pain and thought it was a heart attack, but soon after that, we started to cough and would hack up green and yellow phlegm and it would be a handful every time. My body would move some of it, but not even close to all of it. We lived there seven months and we tried telling our landlord the house is not inhabitable.
I had to get a blood draw to check for a blood infection and got meds from the doctor. I took naproxen among other stuff and had X-rays on my chest to check coughing production, and in the last few days we have been coughing up blood. This is the worst thing that's ever happened to me. We also have it all and video of us coughing out huge, black dust balls out of our lungs.