Hi, simplydifficult, welcome to PsychCentral.

It sounds like you still have people and ideas/dreams around you; I would put them together and talk to the people. Does your boyfriend know of your desires for family and job/career? You are living with your brother, does he have any other resources he can offer you? Can you take basic nursing courses that are required in the first couple years and get a corresponding job (nurse's aide, LPN while working for RN, etc.) while you also take the practice courses or get a loan or scholarship of some kind?

Maybe you can see if there are other single mothers working for degrees and get in a shared housing situation for them; I know in my area there are often special college programs for single mothers to get ahead. I would talk to your school counselor and see if there might be a program you would qualify for.

Maybe you and your boyfriend could do a little relationship counseling together? Do you know what your boyfriend wants (rather than what he does not want)? Maybe you all can have a heart-to-heart talk and figure out a way to help each other as "friends" and put the harder relationship problems on hold for a bit.