how to be a single mom/full time student/ work ?

I'm seriously crying as I'm typing this, but my ex Bf and I decided to go our separate ways. We can no longer make it together, to many fights, im tired of feeling like shit everyday. Im so heartbroken that this is actually happening, I come from a broken home and I never thought this would happen to me. I'm only 19 and I'm in college with a one year old boy, knowing him he would probably try to take my son away since I don't have a job so I will get one, I can't move in with my family because they have absolutely no room for us, so I'm lost there. 
I really want to continue going to school. 
Can you please help me with advice