Thanks. Well, I am assuming that I have what are the very early stages of gyno. Perhaps if I keep taking Propecia, matters will get worse, or maybe it has already leveled off - I'm just not certain. I can guess that having a higher body fat and weight would increase one's chances for full-blown gyno, and thus a tenderness would probably precede any puffiness and increase of size in the nipples. I've seen some posts discussing the possibility of a placebo effect with Propecia, in which people imagine (and believe) that certain side-effects have shown up, but I myself have physical evidence... evidence that I am not at all happy about.
But this is no surprise. I was never fooled into taking Propecia. It was a choice with known possible consequences. And, obviously, the benefit of keeping my hair outweighs the cost of the side-effects (at this point in time).
Goodluck.