5 pounds 4 ounces at 35 weeks ?!

Melissa
I had an ultrasound done this morning and they told me he weighed 5 pounds 4 ounces ? They told me he had a little belly but it's in the normal range ? I got home asked my sister and she said because I don't eat right and he's not gaining enough weight ? I'm really concerned now ? What should I eat to help him gain weight ?