I used to pretty badly. I kind of grew out of it though...
Now I'll get it when I notice something somewhat out of the ordinary happening, like if I get and I wheeze instead of cough. Well, normally I cough. So I freak out and start thinking, "Hmm, maybe this isn't a cold after all. Maybe I should go on WebMD..."
Kind of an odd example, may or may not be a true story...
When I think I have a problem I keep it to myself though. Haha, it goes a little something like this, "Well, it appears I could be suffering from a pulmonary embolism right now, but I don't want to have to bother my family with that. I'll just lie here and fall asleep so I can die in peace." Then I wake up, no problems.