I Don't Want to Stop Grieving, but I Can't Have My Son Back

i know other people have lost children who have done the same now. I couldn't imagine not tryi to create that, even if i couldn't have my son back. It never feels like that child replaces the one that was lost. But i would, i shudder to think about if i wasn't able to have another like karl's sister.I guess how you get through it, you would find a way to bear it. But it's hard enough to bear even the way things are now.