Your feelings are very normal. Allow yourself to grieve, this is not an easy thing to deal with.

My baby was 7 weeks, but I still feel like I lost a family member. My DH found it very hard to deal with and didn't talk about it. He still really hasn't talked about it, but I guess that was his way of dealing with it.

You have a right to feel however you want and no one can judge you for that, nor should they. And... you shouldn't judge yourself. If you feel sad, cry. That's what we do.