My scale says...

I've lost 2 lbs in the past 2 weeks. I wonder what my Dr.'s scale will say.. it's always wrong. And I'm pretty worried that baby girl is not doing as well as she should be. I don't feel like she's growing well enough, I'm not sticking out as far as I feel I should be which makes me think she's not getting as big as she should. Don't get me wrong, I don't want a huge 10lb baby! But I'm afraid her lack of growth isn't good. My Dr. didn't seem too concerned, but I hope I get another growth scan before too long. I was over 8lbs.. Hubby was almost 9lbs... why is our baby so small???