I'm nervous looks like 3 weeks ahead 😞

Jocelyn
I went in today for my 28 weeks and 4days checkup and my doc said my baby is like  measuring 3weeks more than what it's supposed to I'm freaking out cause not to long ago they told me I have diabetes and now I have a ultrasound next week has this happened to any one oh I'm measuring 31 weeks 😞 can you tell me your guys experience if it's happen to you and what do your ob gyno does next ?