Im worried somethings wrong with my unborn baby ..?

I didn't even show with my first pregnancy until I was 8.5 months along. I gained 30lbs. Talk with your OB and see how much weight he wants you to gain. The norm is usually 20-30lbs. Remember you usually add on 1-2lbs a wk. in the last 4wks of your pregnancy. So if you figure anywhere from 4-8lbs you should be okay.