Identical twins

I have a 8, 6, and 3 year old. I'm currently pregnant with identical twins. All of my past pregnancies had pretty major complications towards the end which led to all 3 of them to be born 4-5 weeks early. The risk are more serious with twins. I'm worried, I'm not gonna lie. But I'm staying strong and excited for this double blessing God has given to me!!! Praying hard for good health for all of us!!!!