I lost weight at the start - I wasn't keeping food down and was generally ill. My arms, face and ribs in particular got a little thin.

Never mind - I then put on 12kg by 23 weeks! My midwife actually advised me to cut back on dairy and some other things, cos I was putting on weight quite rapidly (although I am 5'9"). So I have been eating more sensibly and my weight gain has slowed down to a very reasonable 1kg every 2 weeks or so