In case you are not aware, "original sin" is not accepted as valid doctrine in the Orthodox Church. The Orthodox position regarding many of these questions can be found here:Catholic theology teaches that non-baptized children, including those that die in the womb, do NOT go to heaven. We don’t know where they go, but the official Catholic teaching is they go to a sort of limbo. The reasoning is God is merciful, so they wouldn’t go the hell, but they are still stained with Original Sin, so they cannot go to heaven. Abortion is evil. Full stop. A Christian that defends abortion is not a Christian.