16 months and counting here!
I couldn't vote, because I haven't gotten my period back yet -- dd is 16 months old
She does still nurse frequently throughout the night. We use Natural Family Planning, and I feel fairly confident that I will be able to tell when I am ready to ovulate again -- I'm actually seeing some signs of increasing estrogen now. I'm just hoping that it's regular when it does come back! It does make my dh nervous, though -- he is really not ready for another one, and he doesn't fully trust that I'll be able to tell when I'm fertile again. He's just freaked out because we got pregnant the very first time we ever used a fertile day, so he's afraid I'm some sort of fertility goddess, LOL!