I noticed this fairly recently, on the back of about a month of a bad stomach and, before that, a week of heart palpitations. I have a pretty long history of depression and anxiety without the Dr. really being interested, nor was he regarding the heart palpitations, nor my sexual dysfunction since maturity. I do have a history of thyroid issues on my Mum's side of the family. So, this enlarged thyroid!? It's not painful, I'm in no better or worse a mental state than I had been before (as far as I'm aware) and it's lasted probably a month now. Isn't this pretty odd in a male of my age? A lot of google searches bring up reams about women slightly older than myself but few young, healthy males.
If the reply is "go see the Dr." I probably will anyway but if I'm sat there with a visibly pounding heart and he ships me off I can't see him changing for a second Adam's apple.