Yanbu. This thread is brilliant.
I think I have the opposite of this...
I ran a half marathon on a stress fracture, thought it was muscle strain.
Broke two bones in my foot, didn't complain until I couldn't walk at all.
Had whopping cough, thought it was hayfever.
Lost part of my vision, thought it was all a fuss about nothing (until I properly freaked out when doc said it could be ms)
Have asthma, totally out of control for a year, refused to believe it was actually asthma until doctor persuaded me to have stronger drugs for 3 months and it got better.
Mind you, I only need to be near a sick person and I freak right out. yuck.
I also agree with the earlier poster who said lot of it was in the mind... I had a cough and sore throat for three days, carried on like normal. Had some bad news and suddenly I feel really poorly. (not flu, but the achy shivers etc.) I can totally see the link between physical and mental health.