All I Want To Be Is A Mom, is that bad?

I'm going to school for kids, Early Child Dev. & Education. I've spent many summers with my godmother helping her taking care of children. Me and my BF were talking and he said "why are you going to college if your not interested " and I said " because all I want to be is a mom, can't go to school for that. I mean I'm 18, I know having kids at a young age is difficult. I'm not trying to have any, but I can't wait. This one girl is pregnant and saying she's not happy, it made me sad. She's putting it up for adoption and I wanted to say so bad" I'll adopt it" but... oh SHIT, too young lol. I just want babies. Lol