What are the advantages of online/homeschool? What is the cost of online schools & are there any in missouri?

I think I should do online school first of all because I'm pregnant. When my babys born I know I can do it and school,but I don't know about regular school. I also work better alone. I often get distracted by other students.I am a pretty smart student. I've taken honors classes all throughout high school. I will be a junior this year and I'm determined to get my diploma as soon as possible. I know I can do it. I often like to get ahead. I would also want to do classes year-round. I want to get into college as soon as I can & be a nurse to give my baby the best life it can have. What are the options in missouri? Are there any online schools? What is the cost? Please and thanks