@slowdecline48 Yeah :/ definitely agree about the carpet thing. We had to get the carpet removed from my bedroom for the same reason.
Try search on google for Chronic Inflammatory Response Syndrome (CIRS), which is inflammation and immune problems caused by mold.
For me that's the cause of my chronic fatigue, immune, sinus and other symptoms. My mum has similar symptoms bc we were living in a "water damaged building" although no visible mould. We had to move out of our home earlier this year and are currently staying with family.
Integrative gp also prescribed a binder called Welchol which I haven't started yet but it's supposed to help treat it.
Best of luck! Hope the cleaning helps. If not you may have to consider moving depending if that's what's making you sick.
If you have any questions I'm happy to help :)