Hurting

A friend of mine just had a miscarriage. It's weird that I've known people who have had them before, but this time it hits me harder. Because I am pregnant it just breaks my heart even more. I don't really know what to say to be comforting. Part of me feels bad because I still get to carry my baby and she doesn't. I just wish I understood why some babies never make it out of the womb. Why create them in the first place just to have them lost before they ever come out? I know that God has His reasons and that He uses these times ultimately for His purpose, but aren't there other ways to show us what He wants? These are the times that I just don't understand Him, but I do still trust Him.