I had a condition like that once and it was caused by Bacteria from the carpet in the house, which was installed in 1977! Once that was out and replaced, I began to get better. Also, AC filters and dust can make you sick. If you have stuff stacked up that you havent dusted in a while, it will make you sick too. Wash the sheets on your bed once a week in Hot water and keep the bed covered when you are not sleeping in it to avoid dust mites getting on sheets during the day.