Ive had a headache and a fever for 8 days in a row now with near no relief. I thought it was a migraine at first so I bought some Exedrin Migraine. Took half the bottle over 3 days with no success. Next day I bought Advil pm. Took with Exedrin and was able to catch a good night sleep. Same formula failed next night and all day. Today bought Tylenol and nothing seems to work some in assuming its a sinus infection and I want to irrigate and I have some HySept 25 which is like a saline. Am I okay to flood my nose with this stuff? Ive never had headaches like this or sinus infections ever before...