My Little Family Needs Help

I'm in desperate need of assistance to provide for my children. I have been a stay at home mom for three years now, and I have been doing what I can to help support the family. My now ex fiancé has been using meth and has not worked since July. He keeps leaving for several days and coming back. Every time I think he's going to stay gone he shows up randomly. Things are just so stressful right now. I'm experiencing some emotional and verbal abuse as well. I was once under the impression that he was going to be working again and he wasn't really going to a job. I have been signing up for any form of assistance that I can possibly get, and this truly is a last resort. I am trying to get back on my feet and do what is best for my children. Part of that is keeping him away until he seeks proper help. It's going to be a tough road, but I know that I can do it.