Boyfriend help?

Ashton
I am getting towards the end of my pregnancy.. I'll be 30 weeks Monday and he is taking suboxone.. Snorting it... He is addicted to it.. Been on it for about four years. I have never done any type of drug... But he's done everything his whole family does drugs.. He says he loves our son but he won't go to rehab.. And can't quit alone.. He won't even go get a prescription for the suboxone... So what do I do?? I love him but its hard being supportive we've been together almost 2 years... And he said he would change and do anything to change but when i tell him to call a rehab program he won't.. He won't even get a job ...