I'm still nursing my DD, who's 18 1/2 months now. She's showing no signs of stopping! At times, I'm ready to finish (like those 3am nursings), but other times I want to go on as long as I can. I'll probably try night weaning her pretty soon, but she really doesn't like being told "No Nurses" right now, so it'll be a job!
What I found funny was my visits to the OB and then DD's pediatrician. My OB told me to start weaning - it'll help with DD's transition (and be easier on my body). The pediatrician said that if I wanted to start weaning, that's fine, but take it slow, and if she's still nursing when the new one gets here, it'll help make the transition easier - and that my body, as long as I'm staying sound nutritionally, will accomodate nursing and being pregnant.
I have to admit that I *love* my pediatrician!!
That being said, we'll see what happens! I'll nurse DD as long as we both can take it.