custody?

Hi, I told my husband I want a divorce and he told me that if I divorce him he will make sure I will only have supervised visitations. I don’t want to go through court I tried my best to change his mind for joint custody but nothing works. I am the child’s care giver 24/7 I don’t even smoke anything like that. We live with his mom and they both tell me that if I divorce him I will have sup. Visit. they tell me that they will tell the Judge that they think I might run away with the child (I never ran away or take him out of state without his permission ) and the judge will give them custody , they say cause I don’t have a job and a place to stay they will win. I just want to be a part of my boy’s life, I want joint custody because I want him to have a father in his life, maybe my husband’s wants to hurt me but he will hurt the boy too, if he really loves him he shouldn’t take him from me like I don’t want to take him from him. Can I lose custody? Will I be able to get help from the state till I get a job and have joint? My son is 3 y/o.