Biblically it's not explicitly stated whether or not unborn children go to heaven and its a mystery to many sects of Christianity. The only thing that we can do is hypothesize on God's character towards children and reach a conclusion. Many Baptists believe that children are without sin until reaching a certain age.http://www.gty.org/resources/questions/QA101/do-babies-and-others-incapable-of-professing-faith-in-christ-automatically-go-to-heavenGrace to you is a very handy resource on some of the tougher questions and you might find that to be an interesting read as well.
22 He answered, “While the child was still alive, I fasted and wept. I thought, ‘Who knows? The Lord may be gracious to me and let the child live.’ 23 But now that he is dead, why should I go on fasting? Can I bring him back again? I will go to him, but he will not return to me.”
what makes Christianity more true than the Hindu of the Nambudiri in India or the Shamanism of the Yanomamo in South America?
Christians saying it's more true makes it more true