Thanks guys! Yeah I thought I was a little big...
Gaby- I have had two u/s already, and both showed just one fetus. Hopefully that's all! My sisters are twins (with each other), and it's supposed to skip a generation, which holds true in my family - my grandmother had twin cousins.
Kari- i've only gained 1 pound.
Edit: just weighed in again and i've gained 3 pounds.