I lost 13kg during my first pg, but I had hyperemesis for most of it, so I wasn't eating at all. With this pg I've gained about 6kg so far, but I actually look slimmer in the face than before I fell pg, so I think the weight is all belly and boobs. I too am a bit overweight and I think that's why the docs dont get very concerned. With the first pg the doc said "the baby gets everything first, you get everything second" and mentioned that the fat stores are pretty much used up by baby if worst comes to worst. Try not too worry too much, hon.