That's a tough one. I've been there, I won't go to a doc because I've been to a doc sure I had double pneumonia and of course it turned out I didn't...which just meant a wasted co-pay and antibiotics I don't need and could be harmful.
Then again, if your body is telling you something is wrong you want to listen. Docs have been wrong.
If you're just now seeing a doc after 12 years I think you're safe from the hypochondriac label, though.