Help with How to Change you due date for the weekly updates

Ok so I subscribed to the weekly updates while I was prego.....now I had my baby and obviously the due date was wrong......can anyone tell me how to modify the due date or fix the due date that the weekly updates that I receive (you know the ones for the baby's growth) are correct!?!? It's on week 5 according to my old due date of June 11th but I actually had my baby on May 23rd!