I am a mother of 7 kids, I need to get out and find a job?

Hi, I really need to get out and start to work again, My youngest son in in school full days now, and I thought I could go back to school and get an education, but my oldest daughter came home pregnant and now I am watching my grandson, I thought when my son was in school full time maybe just maybe it would be my time to go back to school, I want to help my daughter but I really need to get something going for me, We just lost our home to foreclosure and i want to get back on our feet, I have a husband that is in a depress state, but he says he is not, he is a nurse, and can make a decent check each week, but if only if he goes to work, I want to go to LPN school, but we cant afford it, but I am willing to do what it takes to get started, I just need that push of encouragement, which no one around here will give, so I guess my question is should I just go do it and the heck with everyone, but then I feel bad for my grandson, I don't know what to do