I guess this must really vary from woman to woman, if you start out bigger then You will gain less i suppose if your slim to begin with you will prob gain more!!
I started out 9.5stone (133lb) I WAS fit and athletic, i quickly got spd and so activity levels have significantly reduced. Im 27wks now i gave gained 35lb already! I. Hoping this is it nearly it im findi g it very wierd, i have never been podgy! But im hoping bfing will shed the lbs from me!