First timer here, and have no idea what's normal! My BMI was 20.2 before conceiving - I weighed 8st 13. I'm 10 weeks on Weds, weighed myself this morning and I've gained about 6lb already!
I'm sure I've read that you're not really supposed to start gaining till the second trimester, and now I'm panicking that I'm gaining too much too quickly! I'm gonna be enormous by the end of this!