What to do

So my bf and i have been together for almost a year and we have a baby on the way. I have 2 other children and he has one. So he now tells me that i cant leave him and that i cant have a apartment because i dont want to be with him is to protect me from the drug trafficing guy lord who wants to hurt me. I dont even have guardianship of my kids due to a dv situation last year and he says that if i leave something bad will happen to them i dint know what to do.