On Thurs night I started developing a funny smell in my nose, thought maybe I'd be getting a sinus infection. Yesterday (frid) I was tired and felt a bit phlemy-y, smell in nose continued, I struggled through work, then around 3pm my back started hurting. Today I have had to come home from work early, my head hurts, my back is killing, I feel tired and sweaty. Its too slow developing for proper flu isn't it? What the heck is it? I have severe health anxiety so this is also causing anxiety symptoms but I know enough to tell the difference.