I've stayed the same weight since I got pregnant, which means I've lost weight!
my ob isn't worried, In fact he is happy! GD makes me eat well and I exercise. It's no ones business how much you gain/loose and no one should comment negatively about it! My friend gave birth last month and you could barely tell she was pregnant. Her daughter was 7 pounds.. Very nice size!
Ignore people if you can. Sorry you are going through that, it really sux!