I'm just all excited and for some reason my girlfriend and friends don't understand

I've had some nodule/stuff behind my nipples for a while now - I can't really recall if that was always there or if it was aided by the *asterides. When I started spiro, I noticed them getting a little bigger as tissue started to grow.
Then last week, holy cow! It felt like when you have a deep, deep zit in your skin. Only it was behind my left nipple. Ow! Incredibly sore. Except touching it also causes... stimulation in another place. When I pinch at it, i feel like the nipple is attached to something which anchors it more to my chest and keeps me from squeezing the nipple/areola flat, plus getting puffier. My right one, for example, can be squeezed flat and has more elasticity.
"Oh. So *that* is what actual breast growth is like. Honey! Honey! Look at this! Check it out! My left one's growing!" "It's okay baby." "It's not okay, it's awesome! Check this out!" "It's nothing to be worried about, lovely." "You aren't listening, I'm excited!" *sigh*
Now if only the other one would get on board :p
I'm just so excited and I can't stop poking it and giggling and smiling. Well, I stopped giggling and smiling when a coworker hit me in the chest earlier today. I'm sure I got weird looks cupping my chest for a few hours.