Hi Rainbow
First I'd like to say that i am deeply sorry for your situation, but understand this, abuse has no degrees of seperation be it sexual, physical, verbal, and/or spirtual it is all abuse and NO ONE DESERVES TO BE ABUSED.
My advise to you would be to speak to your guidance counselor, teacher, another trusted adult and /or ChildHelp USA@1800-422-4453
Please don't leave home because you turn 17 and have no where safe and secure to go. Doing that, will almost guarantee that you will not only be abused again but exploited also.
Marriage should be reserved for love not necessity. You have many issues to work through, before you are whole again. You cannot be whole for someone, unless you are whole for yourself.
Keeping You In My Prayers.