Feeling discouraged

Mackenzie

So I go to my ob today and I have my ultrasound baby looking good and weight is five pounds nine ounces at 37 weeks like she said that that's very low birth weight and I'm already dialating in happy my baby healthy but it's very scary to know he in the 16% tile my husband was a premi and I was six pounds I feel maybe that's why but idk what to think I have diabetes and taking insulin I'm just praying my son is ok does anyone have or had this problem maybe to make my day brighter like I said he ok but still on the little side