At least you got the college thing out of the way! I dropped out when I got pregnant and just started again 3 years later! I wish I hadn't been with my daughter's father when I had her, but I was... You can do it - you just have to keep telling yourself you can... I do agree with the previous poster, get yourself to a doctor ASAP so you can start some good pre-natal care and they will be able to hopefully alleviate any fears of the physical.
Your parents will probably be able to help you through the emotional side of things, though, so tell them first. If you want to tell the father, I see no reason not to, but don't expect the world from him. Chin up, and keep us posted