Hi- I am experiencing nasal stuffiness in the mornings and although no mucus, my lungs feel as if I need an antihistamine daily. It usually helps, but by the end of the day, the symptoms return. I can breathe normally, no shortness of breath , no chest pain or heaviness, it almost feels like it could be an allergy? I can take deep breaths normally , but have a slight wheeze. No fever. Otherwise feel good. What could it be?