wow early on I hit mine on everything, my own arm, doorway, a sheet tray, caught a falling object and pulled it suddenly to my chest....it was funny aside from all the pain. I still tend to roll over in bed and my nipples yell at me "stupid don't lean on me!" it was actually good when I started presenting full time, as wearing breast forms keeps them safe.
a few weeks ago I remember walking out of work into a cold night and feeling them harden, which was a new thing. being over weight my chest had some fat to it to start which makes figureing out how much they have grown very difficult, though I can tell they have, in fact yesterday I was laying on my stomach (carefully) In bed when I looked down and was like "hello, your new there" so I took some pictures...turns out none of my friends or my therapist want to see my pictures :-P
Serena, who is a bit obessed with her developments.