Miscarriage and due dates

I'm just looking for some support. I had a late term misscarrage in January at 20 weeks and gave birth to the most perfect little boy, to early to survive. But my due date is coming up and I'm not sure what to do. I want to do something to mark the date I suppose to get some closure and to draw a line ( I know that sounds heartless but I don't mean it that way) under it and start to move on. I'm just wondering what anyone else did after miscarriage and their due date.