that happens to my husband BAD! he too uses some sort of doctor prescribed nasal spray. one time his were so bad, underneath his eye, right by his nose, puffed up like he had gotten punched. it was FULL of water from the lake! it looked HORRIBLE!
sometimes I feel stuffy after some particularly bad crashes that nite..but nothing like him. He can't even breathe.. I guess like Ryan said your nasal tunnels are blocked and holding the H2O in??
good luck, I know how bad you must feel! (now he SNORES even louder!!!)