Angel baby due date.

My due date was set for January 31st 2015. I miscarried at 9 weeks. I got really depressed after I lost the baby, but got over it and now it's coming back as my due date gets closer. Is this normal? I can't help but be almost devastated when I see new babies and tiny baby clothes. My daughter will be two in March so I know how amazing it feels to love a child. She's more than enough for me, I just feel so torn apart. ?