yes, no need to worry! It really depends on what you started out at before you got pregnant. Underweight women put on more weight and overweight women often put on less, or none or even lose some!

I am 174cms tall (5"8/5"9) and weighed 59kgs when I got pregnant... I have put on 10.5kgs so far - so about to hit 70kgs. This is about right for me, as I was very lean to start with....last pregnancy started out at 58kgs and put on about 14.5kgs or so.

just eat right, exercise, drink loads of water and your body will do the rest!!