Should I feel like this?

Kerry
9 days ago I miscarried I was a wreck for 3 days then I started to feel back to normal again I had kind of accepted what had happened to us.. But I've just found out my boyfriends friend and his wife have announced their pregnancy they're 8 weeks and due in janaury... I would be 8 weeks now and of course my due date was January... I feel like absolute shit again and I had been feeling normal today but since I heard that I can't stop crying now wondering why this has happened to us. I know I should be happy for them but I feel so jealous. Has this happened with anyone else? How do you deal with it?