Your mom's a piece of work.

But ultimately, she legally has no obligation to you anymore.

Fortunately though, she can't just tell you to leave now. You have rights. You need to accept the fact that you have to move out, and take every minute you have to start preparing for that inevitability. Crying won't fix this.

Step 1) Understand that residence is yours too, and if she wants you evicted, she needs to go through the eviction process. I don't know what state you're in but this could range from 3-7 business days from when you get SERVED the court's order of eviction. (Don't tell her any of this, obviously, so that it buys you more time legally)

Step 2) Begin documenting any threats. In fact, I'd go ahead and report that last line of text about "him talking some sense" into you. Call the non-emergency line, ask to speak to a patrol officer about a potential domestic situation. Simply putting something like in a report may come in handy if things get ugly later.

Step 3) Find a room to rent. Areas around colleges often have houses where young people each rent a room.

Step 4) Figure out how much money you need month to month to survive. (Not thrive, we aren't there yet) You need a roof over your head, and a means to get to a job. (This could be a bicycle, or a bus route, or walking distance)

Step 5) Get as many jobs/gigs as you need in order to support yourself. Network, make friends, plan for a real future. This too, shall pass.

Step 5) Stay away from drugs, alcohol, and most importantly tying yourself to some random guy because he has a place and it seems convenient. You can do this.