I know I am too young (15) but for some reason I want a baby?

I am 15 and I know that I amm too young to have a baby but for some reason I have had these urges to get pregnant? I am a virgin, no boyfried, I want to finish high school and get a good job, but I want a baby! Why? What should I do about this? I have watched YouTube videos on teen moms and I can't wait to get out of high school and have a baby with a good guy.. Why do I want a baby so bad?