I Know Changes Are Coming

My boyfriend is the breadwinner. I live in his house he has mortgaged, and have barely any income for myself due to not being able to get a job in my field. His career is in Engineering, and the facility where he works has decided to take him off the program he's been on for over 5 years. He is still working on the program until they give him notice, and has been applying to different programs within the same company in the same facility. But if they don't hire him in that same facility, he has to look at other places in the City we live in and have a longer commute....however, if none of those accept him, we have to sell the house and leave! I'm in a slight panic because I am not ready to leave yet. My mother lives near here and we're all she's got. And to be honest, she's the only family I have who I believe truly cares about me, and we're really close. We talk all the time and have a good relationship. It wouldn't be fair to leave when she has no one left. But if I decided to stay, my boyfriend would definitely choose his job over me and I would be forced to go elsewhere. The problem with living with my mother is that I don't trust her boyfriend. He is bi-polar and takes offense easily...and he seems like he could be aggressive. I don't need that negativity in my life. There is too much going on and I'm not sure if I can take it anymore.