You might want to really clean your bed (pillow, sheets etc) and surroundings from potential allergens like dust mites, mold, pollen etc. Ideally with one of th

You might want to really clean your bed (pillow, sheets etc) and surroundings from potential allergens like dust mites, mold, pollen etc. Ideally with one of these mattress vacuum cleaners. Window sills (even outside, if the window doesn’t seal hermetically) might leak mold spores or other particles into your bedroom. A really good air filter next to the bed might also help.