Hi There, I've Been Waking Up The Past Month With

hi there, i've been waking up the past month with extremely blocked sinus/nose, getting occasional bloody noses, and with the hardended mucus backwashing down my throat. I thought it could be dust/dander and purchased an air purifier much larger than the room volume. Could it be mold or something like apnea? (i sleep through the night and wake up fine - no exhaustion)