20 and pregnant

Hello I just took an hpt yesterday and got a big fat positive, twice! I'm currently 20 years old, I'm in school to be a Registered Nurse. I'll be done school in about two years. I'm super nervous about having a baby but honestly kind of excited in a weird way. I'm blessed that God thinks I can handle this and gave me a little angel but that doesn't stop my emotion of being absolutely terrified. My baby's father is very supportive and excited but in shock since we were not planning to have a child this early. I have told my mom so far, she is supportive although she's concerned about my future and finishing school. Any young moms? Advice with school? Anything would be helpful to ease my mind.