I think that nobody can predict the future, but I think life is well made, so whatever it's gonna happen to you in the future, it's gonna be for a reason and you will grow from that, whether it's a positive thing or not :)
I don't think anyone has a guarantee, a for sure response to that. Think many/most of us would like to know too. Your doctor might give you some insight, but he is giving an educated guess. There are so many variables that can influence that. I guess what I am saying, is cherish the day. make the most out of every day. Take time to smell the flowers and tell those around you how important they are. Tomorrow is not a known thing for any of us. Wishing you the best in your journey.