I'm 20 weeks pg and have put on 4.5kg which I'm sure is very normal. Last pregnancy I put on 20 kilos, a HEAP of that was fluid so this time I am drinking more to try not to retain as much fluid. I ended up losing all the weight plus another 5 kilos after my DS was born!

So don't worry too much, just have sweet things in moderation. All pregnant women crave bad food!