If you're content and comfortable with how your life is going, which honestly doesn't sound bad at all, concentrate on being happy and getting everything ready for your baby... It sounds like you're doing a good job to me. Many people have children while in college or before college and still manage to finish their education.
I'm sure they will come around. It might actually take them seeing the baby in order to be happy about this.
My situation probably won't help much because my family got over it by the time I got married (which was when I was 6 weeks pregnant) and even more so after they saw my first ultrasounds (10 weeks). And now he's a year old and they couldn't possibly love him more.
Hang in there and just do what's best for your baby and be happy.
I'm sure everything will work out just fine.
PM me if you ever need anything. =]