pregnancy weight

Emma
I'm currently 25 weeks with my first baby and I weighed 63kg before I was pregnant. I had awful morning sickness and went down to 56kg and my weight has fluctuated since then but I've never gone back up to or above my pre-pregnancy weight. I'm concerned that I now weigh 59.6kg when everyone seems to have put on weight by 25 weeks! Should I be concerned? Baby was measuring fine at last appointment (20 weeks) and my next midwife appointment's on the 14th (I have my glucose test on the 9th)