In addition to the other allergies people mentioned; I'll add mold / black mold. Adding a HEPA air filter to your bedroom might help. Washing all your bedding

In addition to the other allergies people mentioned; I'll add mold / black mold. Adding a HEPA air filter to your bedroom might help. Washing all your bedding in hot water with allergy safe detergent; mattress protector; deep clean carpets; and always showering before bed would reduce pollen / mite activity. A few over-the-counter supplements you might try: * Mucinex D - an expectorant; common name 'guaifenesin'. * NAC 'N-acetyl cysteine' - an amino acid - loosens mucus, among other benefits. * Hot saline sinus rinses (ex Neilmed bottle)