I went for a gynecologist appointment, she says my belly is only suita…

I went for a gynecologist appointment, she says my belly is only suitable for 35 weeks, but her calendar shows 37 weeks and 5 days. She says I'm small and my previous children were also born small, so there's no need to worry. But I keep worrying anyway, maybe I should go for another ultrasound to see the baby's approximate weight? The doctor says no need... I asked her what it means, I don't even know, from the last ultrasound 30 weeks and 6 days had a weight of 1620 grams. All the time they tell me that I have a small belly! I'm just in a bad mood because of this, has anyone