I did take sumatriptan and pain killer but no pain now and skin under eye is no longer swollen, but left side of nose does not feel right but the nerve pain has gone.
Perhaps the fan and cold air does have something to do with it, pity because I have been using it for years and keep it clean.
It all depends whether I can cope without the cold fan, I may try steam tonight.
Perhaps I can fight this off myself, nipped it in the bud so to speak before it got a really strong hold. Fingers crossed.