I don't want to lose my mother.

I’m 18 years old and 16 weeks pregnant. I lost my house in foreclosure in early january and I was stuck moving from place to place with my boyfriend, then finally his dad kicked us out and threatened to hit me. To my rescue my grandparents and mom let my boyfriend my animals and myself to move in temporarily. After a few weeks my mom my boyfriend and I got our own place. I love my mom more than life itself, shes been the only person there for me, but she just snapped yesterday and said she was moving out b.c my boyfriend doesnt have a job, but he was laid off and just got a job through a temp service today. She says she doesnt want anything to do with the baby or me because I chose “that piece of crapt” over her and I would never do such a thing, I just didnt want to have to chose between the two. My boyfriend and I have been together for 5 years. If it werent for my mom, I probably wouldnt have even had the strength to even think about keeping a baby. But now that I am I can’t do this without her. Im miserable and all I do is cry. Im afraid its affecting the baby, but all I want is my mom to stay I need her. Please help.