21 & pregnant?

Is this a bad age to have kids? I wasn't planning on having kids until I had a decent place or job. I'm currently relocating to a dorm room in the spring and I'll have a place by fall 2017. I know it will be hard but I'm determined to finish college and take care of my kid. The father of my child is still very much shell shocked and still trying to get on his feet. (We had a place, but we all had to relocate due to finanical reasons). I have my head on pretty straight honestly, I'm just afraid of disappointing my mother. She wanted me to wait until I got married to have kids and I know this would break her heart. And she doesn't like the guy I'm seeing. :/ I'm scared to tell her and I don't want to disappoint her. Any advice and am I a bad daughter for this?