Bad cold with severe headaches, and on the 23rd I passed out/collapsed at home. Taken to hospital, had 2 litres of IV. Doctor thinks I MIGHT have mono (although I doubt it, because my throat is the least of my problems) and the blackout was just some "post-viral" thing.
I'm still stuffed up and the throat is still sore, but I think I can call it by now, since the headaches/blacking out stopped.
(By the way, blood test showed neg. for mono, but I have a high white blood cell count)