Hun I had put on about 10kg by halfway and over 20kg by the time I was fullterm. I was 58kg to start with and I am now about 62. Don't worry. Eat well, have your little indulgences etc and don't worry you will lose the weight. Some ppl just gain alot I guess, I had morning sickness right through and really wasn't eating alot and still gained alot. If you are eating well and looking after yourself you're doing everything you can. Worry about the weight after bub arrives