How much weight gain with twins?

CAROLYN

Hi all! I love looking at all the bump pics! Post your pic, how many weeks you are and if you want, how many pounds you've gained at that point (pre-pregnancy weight).

I'm 15w3d, lost a couple pounds during the first trimester and only back up to my prepregnancy weight now. From what I'm reading, I thought I should be gaining more already! I'm sure it will come.