Just been searching to see other people's symptoms to see if this is what I have.
I went home from work with a headache on Monday (I did have a barking cough and my manager said offhand "ooh, everyone's coughing today, I hope I don't get it!" I hope the other girl is ok!). Got home about 4:30, went to sleep, woke up at 6pm when DH and the kids got in and BAM! My face had completely swollen, throat was killing me and I was sweating/shivering in turns.
However, I've done the school run every day since because DH is gone from here at 6am and there is literally no one else. Back in bed at 9:30. And I haven't eaten as much as usual but I have been hungry. And had a fair bit of ice cream as it feels nice sliding down my battered throat!
It's day 4 and I thought I was going to work today. But my face is still swollen, my skin feels shivery and strange, my throat hurts too much and I'm constantly hawking up phlegm, and (disgustingly) using my nose/sniffing rather than coughing to do so because I don't want to injure my throat.
I have had "can't get out of bed" flu before, 2 years ago. This is less incapacitating, but all the symptoms are familiar if slightly milder - the shivering/sweating by turns, aches everywhere, skin sensations, exhaustion. So I'm in the "flu affects people differently, but this is definitely it" camp.
I feel a bit guilty as I could probably do some work today but instead I've emailed to say I'm not coming. I can't talk and I'm not sure I could do a full day and I've been dreading the commute - it's hard enough getting the kids out to childminder or school without the dressing for office, train and 20-min walk added on, so probably safest to leave it. That and tomorrow DD doesn't go to the childminder so I'll need to be on form then!