Too old to have children?

Okay this might be a little long & confusing, but here it goes. I LOVE children, I want to have 2 in my lifetime. I won't graduate college until I'm 30-33. So I'm worried that if I wait until after I've graduated college that I will be too old to get pregnant twice. So I am thinking about having my first child WHILE I'm in college. (I am married.) But I'm worried that I wouldn't have enough time to spend with my child since my husband & I are both working & I am in college. /: Do you have any advice for me?