It all depends.
1) how old are you?
2) how old is she?
3) do you have a job/are planning to get a job?
4) will she drop out of school?
5) do you have a place you can live if neither of your parents want you to live with them?
6) are you going to go to lamaze and prenatal with her?
7) are you emotionally ready to be supportive to her?
8) will your relationship be able to handle the emotional hormonal changes?
9) are you financially stable?
10) is it the best thing for your baby?
Number ten's the most important. Please consider all of these.