Losing weight @ 28w..

J • Mama to a beautiful princess B.Jaiden.S.B 09/22/2016
So I've lost more weight (totaling 20+ pounds) and now doctor has ordered two more ultrasounds to see if baby is growing properly- one at 32 weeks, and one at 36. I'm not getting sick and I'm eating so I'm at a complete loss what this could be from. 28w1d.. Anyone else experience this? Was everything okay at ultrasound? Could baby still be growing good, just taking everything and more from me?