Yeah, this is quite a bad one. For nearly 3 days it knocked me for six. Feeling better, headaches gone as have the aching legs and haven't taken any Lemsip (other cold and flu remedies are available) since yesterday, but still got a runny ooter.
My brother 'caught' something like this a couple of weeks ago. He was running a high temperature, had a thumping headache and his legs ached badly, but no sore throat, no runny nose. He did feel a bit vommity. (Is that a real word? Who cares.)
This state of affairs lasted about 5 days. Our disabled neighbour, a lady who we go and visit at least twice a week, to get shopping for her, top up her electricity key, things like that had also had it. He developed the symptoms she had the same evening we'd visited her. I never got it.
I don't know why I didn't get it. Me and my brother have looked deeply into "Germ Theory." It's problematic. No so called virus, has ever been isolated in any lab, anywhere in the World, at any time recently or in the past. It's quite strange because we do seem to 'catch' these things called colds or flu from each other but many Doctors dispute "Germ Theory", which I believe originated with Louis Pasteur.
Anyway glad you're feeling better.