"They said it would be impossible..."
You don't always get things the way you want in life. When I have children I will be praying that they are born healthy. But many people that are born normal grow up to be scumbags. Babies with defects often defy the odds and survive to adulthood, and many have a very positive affect on the people in their lives. Bad news is never easy to swallow, but a human life is worth dealing with the situation. Chances are that making the best of things will be a decision that you, and your baby, can live with.