18 and want to be pregnant

I want a baby so bad. I want to know what it's like to have something so beautiful growing inside of me. I want to be able to know those sweet moments when they first sit up or walk or talk. However the main reason is my Aunt who adopted me has cancer and we don't know how much longer she will be around. I want her to know her grandkids or at least one of them. I want her to get to hold at least one of them and be a grandma.