Homeschooling could be a very good option for you. However, you must have help and support from family and/or friends. I know I could not have handled a new baby and a full course of study without a lot of help. It's hard to imagine how much time is spent caring for a tiny infant those first few months, and how unbelievably tired you are when you're not caring for him or her. After a few months, it all falls into place, but don't be disappointed if you don't accomplish everything you hoped to in the very beginning.

There are many correspondence schools, private schools, and online schools that offer high-school courses and a diploma. I have a young friend who uses Clonlara School (clonlara.org) and loves it. Clonlara is very loosely structured, and allows you to utilize some of your real-life experiences and turn them into high-school credits. They are also very supportive of their students, and will offer help and guidance so you can obtain your diploma.