ADVICE--teen pregnancy?

At this moment I really don't need people lecturing me about my decisions, my life style, etc.I understand I'm opening myself to the criticism, but I'm sincerely asking for advice, its hard as it is. I am 17 years old and just found out I'm pregnant. the father is 22 and it was more like a one night stand. We are friends but we don't always hang out or talk. I haven't told anyone yet, I don't know how to approach all of it honestly. My mom and I don't see eye to eye at all, so breaking it to her will probably be the hardest task. She gets mad over small pity things so when it comes to the bigger matters, I don't even want to know what will happen. Ive moved out once before because we got to the point of physical fights. So I do know how it is to live on my own, I paid rent and bills with my cousin for 6 months, till my mom begged me to move back in.What will I do about school? I am top of the cl, taking state titles in events in clubs I partake in. I am head of organizations and clubs, always the leader. IDK how people will react to it all. To make matters worse I live in a smaller community. All I really need is some advice, I guess someone to reure me that I'm not a complete screw up. Thanks.