Re: weaning and pregnancy
The PP gave you the right links. Just chiming in to with her- you may not need to wean in order to get pregnant, and as long as the pregnancy is normal and you don't have a history of miscarriage or pre-term labor, it's safe to nurse through pregnancy.
Has your menstrual cycle returned yet? If not, it may come back soon. I think the average time from birth to return of menses for women who are breastfeeding is around 15 months. If you want it to come back faster, partial weaning may encourage its return. A lot of moms start with night-weaning.
If your cycle has returned (or even if it hasn't), the book Taking Charge of Your Fertility by Toni Weschler is a great read for any woman who wants to conceive.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"