I'm am now 20 weeks along. I've reached the halfway mark so I'm excited. The one thing that concerns me is that I haven't gained a pound. I've actually lost almost 7 lbs since finding out that I was pregnant. At my last ultrasound my baby was Appx 11 oz so that's good. But the weight loss still disturbs me. Have any of you experienced a lot of weight loss instead of weight gain?