Well at least you're on the mend. I have a co-worker who experienced similar symptoms as you describe and went to see his Dr. as well. They basically came to the consensus that his lack of a Flu shot (over 10 years since his last one) was probably what did him in, and it was only a matter of time before his body picked up a strain that it couldn't fight easily. At least you had some stuff to do while you were sick. Hopefully you were dreaming about the build during your more feverish states
Get well soon.