Everybody who lives what he or she believes is true in the sight of God will go to heaven. You don't have to be a Christian to get to heaven. Why would a loving God create you and then say that you had to spend eternity in hell because you live in a part of the world where Christianity was not taught, or because you could not sincerely accept Christianity as it had been presented to you? What kind of a God would do that?
God is more concerned with what is going on in our hearts than what is going on in our heads. He wants us to live our lives the best way we know how. After all, when we get to heaven, He will have all the time in the world (and then some!) to teach us the truth.
God asks, "What have you done with what you knew?" Let's say you were raised with terrible values. By external standards, you may have lived an awful life. But you would go to heaven if you have made progress from your starting point. Are you trying to move closer to God or farther away? That will decide if you want heaven or hell.
There is an even easier way to think about this: Where do you want to go? Do you want to go to a place where people are always being kind to each other? Do you want to be helping out? Do you want to value others' welfare as much as your own? Do you want to honor God and submit your life to His teachings?
Or do you want to go to a place where people are looking out for themselves? Do you place your own well-being above everyone else's? Do you secretly want all power - controlling others, owning all their possessions?
We get to freely choose where we want to go. God doesn't throw us into hell. Everyone who goes to hell goes there of their own free will because that is the place they can be happiest.