I think the illness itself has gone away, but it left me feeling exhausted. It's been really busy at work lately, so I've had to do a lot of overtime. By the time I finish my day at work, I don't feel that I have much energy left for anything else. I also seem to be more affected by the cold weather than before I got sick. I'm usually comfortable in cold weather (I'm the kind of guy who sometimes wears shorts and a t-shirt in winter), but since I've been sick there are times that I can't get warm enough.
Weird.
