I had gained nothing at 14 weeks and was worried and now at 24 weeks (and since getting my appetite back) I've gained 12 kgs I was concerned I'd gained too much in so little time! My pre pregnancy weight was 48kg and now I'm 60kg. I think it's a huge shock either way: gaining nothing/losing weight or gaining heaps. I agree, our bodies know what they're doing and as long as we're keeping active, eating healthy and drinking plenty of water it should all be good