Nowhere to go for me and my dog?

Hello, completely unsure where to post this but I'm in Edmonton so I figured it made sense,

I'm a 20 year old woman with a large breed German shepherd husky mix dog, I currently don't have a job nor have been employed due to mental health issues and upgrading high school courses since I haven't graduated yet, I have plans to go to nait to do the sonography program and have been looking to join a work program due to my lack of work experience

I had to leave my dads because he got back with his abusive ex girlfriend who tried to physically harm me and refuses to not let her come to/move into the house although my brother is a leaseholder as well and doesn't want her there, he said we either find somewhere to live or let him do what he wants. I have no source of income except student funding so I tried bringing my dog to my moms house but her boyfriend refuses to give me and the dog somewhere to stay until I can get working and move out. He just handed me papers of a lease violation even though my mom told him it was an emergency and his reasoning for not wanting the dog here is because he just doesn't want a dog. I am at a complete loss and have no idea what to do at this point because I have nowhere else to go :(

What do I do in this situation? I've had the dog for almost three years and have paid and taken care of him with the money, even giving my moms bf $500 to show I am capable of contributing and looking after the dog without anyone else's help. I really don't want to give him up because he's my world :(