poor you. I've had it too, but nothing like as badly as you. Had a filthy sore throat for days, which has left me with a non stop running nose not to mention a cough that wont go away. I swear by Oil of Olbas for a sinusy headache - sniff it, put drops on a handkerchief, drops on your pillow etc. Also well worth investing in a jar of manuka honey - the most expensive you can afford (and it doesn't come cheap, even in the supermarkets). It has antibacterial properties, and in the past has been a life saver. Take spoonfuls of that at intervals during the day! Also there are some mega vitamin tablets, called Wellness which I stuff myself with when I'm not well.
Really hope, and everyone else, feel better soon. We've all joined a club we don't want to be a member of....too bad!