Hi ladies - just a quick one from me
KellyD, I have lost weight in the first tri too. I wasn't overweight to start with and have lost about 7 kgs now. I had OHSS, so that is partly to do with it, but my OB said it's really common. He said babies are the perfect little parasites - they'll take what they need at your expense if necessary. He said it's more important to put weight on in the 2nd and 3rd tris.
Hope that reassures you somewhat.
And to all the lovely ladies who are getting very very close to birth time - good luck!!