I grew up in a place where the water pump station had to have Radon "traps" to filter out the gas that was dissolved in in the source stream. The stream had its source in a hill that had enough Uranium in the granite mix to be minable. Right now, I live in a place whose local granite contains a pretty large fraction of Pechblände. When I took the radioactivity lab as part of the nuclear physics course, the place with the highest amount of background radiation was the front stairs of the physics building (which we noted as a pretty bad place to pass out drunk). The Geiger counter went nuts, as opposed to the actual radioactivity lab room where it was almost quiet.

Radioactivity is everywhere around us, whether we like it or not. The question is if the added amount is high enough to be noticeable in comparison.

Grand_Lunar, unless you approach lethal levels, you're not likely to feel a thing. From your description, I'd be thinking of allergy or oversensitivity to mold or common house mite.

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"We do not require reality to conform to the expectations of the ignorant"