I totally understand and think it is completely normal. Your pregnancy and your little one's early life has been medicalised and it is hard to move on from that. But when he is in the home environment it will start to be different. When I bought DD home I did not leave her side, was trying to do the 3 hourly checks for breathing and temp...silly me but I was anxious too.

IN fact as soon as he is in the car I am sure you will feel different and the excitement will take over. Enjoy.