I had a flue/ cold which I thought I had gotten rid of but it came back after spending 3 hrs next to a wood burning fireplace 4 days ago: the cough, stuffed nose, sneezing, and today my left side sinuses felt odd, more stuffy. I took robitussin max strength syrup about 5 hrs ago, last night and 1 more time yesterday; also took Wallgreen s Flonase equivalent (generic) last night. 10min ago my whole head kind of started feeling a tiny bit numb, like the stuffed feeling from the sinuses was moving all over my head and neck, just enough to notice it but not to call it really numb (when I scratch my head I feel it but tiny bit different than normal). Is this a symptom of something dangerous, or a side effect to one of the drugs? Right now my neck feels a little better, the feeling has sort of moved to the top of my head. The neck is not stiff, breathing is fine, I can talk /walk normally even with raised arms.