Well, you sure don't need to apologize for being depressed. I think I would feel the same way in your shoes.
Try to do something nice for yourself everyday...make yourself do it. It may not seem like much, but it helps. Take care of yourself in as many little ways as you can. It all adds up. Take a shower ,get dressed, put some make-up on, fix your hair.
You've got more than one issue going on at the same time here. New birth with it's ups and challenges. Grieving of your recent loss. Hang in there and sending a big hug.