If you suspect you are sick from mold… test!
When my whole family was sick from mold, we were not all sick in the same way.
The symptoms of mold illness can vary from person to person even within the exact same building.
If I suspected mold, I would start with a dust sampling test for mold called the HERTSMI-2 that can be done with a canister vacuum or a dust cloth.
I would match up the results with Dr. Shoemaker’s HERTSMI-2 scoring system to see if my house was livable.
If that came back negative and I still had suspicion that my environment was making me or a loved one sick, I would do a home air test for mold, which also tests for formaldehyde, and VOC’s.