Scared I can't have a baby and finish school?

I am 19 years old, I have been with my girlfriend for a year now and we have been using birth control pills to prevent pregnancy. We in no way wanted to have a baby at this time but she got pregnant at 18 years old and we just started college. I want to be a Firefighter and she's unsure of what she wants to do. I am beyond scared, depressed and have anxiety because I feel like I will not be able to finish school and my relationship will go down the drain because of the baby on the way. I don't know how much time it is going to be to raise the kid and if it will impede to much for school. Also I still live with my parents and we both having minimum wage jobs but we don't know where we would live with the baby. I feel like if I lived with either of our parents it would not give me and her any alone time and would create problems in our relationship. Please help I am a mess.