Metallica

Am I dying? I have had a metallic taste in my mouth for at least two full days now. I wonder if it is due to the water in my building, or maybe something I ate. My new doctor is testing me for thyroid issues, though I'm not sure why, and it has perhaps made me a little hypochondriacal (yes, that's a real word). I also asked the internet whether or not I am dying. Feel free to weigh in in the comments section on what your best guess is, according to the results of the search. Here are the results of my query:

Conditions listing symptoms: Metallic taste:
The following list of conditions have 'Metallic taste' or similar listed as a symptom in our database. This computer-generated list may be inaccurate or incomplete. Always seek prompt professional medical advice about the cause of any symptom.

G

Gastritis ... foul taste in mouth

Gastroesophageal Reflux Disease ... bitter taste in mouth

H

Heartburn ... acid taste in mouth

J

Jaundice ... bitter taste in mouth

L

Lead poisoning ... metallic taste in mouth

P

Postnasal drip ... foul taste in mouth

S

Scombrotoxic fish poisoning ... metallic taste

T

Tooth abscess ... foul taste in mouth

By the way, before you diagnose me, I don't eat fish, I'm not very yellow, I've never suffered from heartburn or the like, my teeth are pearly and healthy, my nose isn't running, and I try not to eat much lead. Ok, go at it.