Weight gain by 16w

Lindsey

Based on a previous thread I bought Barbara Luke's book and now am freaking out a bit about not gaining weight. She talks about how important it is for the birth weight of the babies and how long they stay in.

I'm 16w, on the low side of normal weight to start with, and have only gained 2 lbs. The book says by 20 weeks I should have gained 16-20 lbs.

Is there any hope of catching up? What do others think of her weight gain targets?