Still scared 😞😞😞

I'm officially 31 weeks now and everything has gone fine in the pregnancy normal blood work normal ultrasounds I even had the additional NT scan to be sure about downs everything is fine .. But I still worry I worry something will happen .. I want to stop these thoughts like what if they missed something what if they read the numbers wrong?? All these what ifs?? Your probably thinking what a negative Nancy but I have had tragic experiences with pregnancy and losing a baby after child birth 😞😞 I wish I could make my mind stop this all I want is my baby to come healthy ... anyone else having a fine pregnancy and still get scary thoughts of things that may or may not happen?? I feel like I'm trapped in my own head πŸ˜–πŸ˜–