That would be a very selfish thing for you to do. Think of the child for god sake, It would be very hard for that child going to school and other functions and always having to explain that you are not his grandmother but his or her mother. I'm 48 and I have a six year old grandson that is a true joy in my life. How would someone of your age be able to keep up with all of the activities, like sporting avents or just running and chasing around a child. When that child would go to college or get married that would make you how old? Think hard before making a life time decision that doesn't only involve you and your mate.