What should I do?

Me, my husband and my daughter live with my in laws. Whom have helped us alot. But between medical bills and trying to get money saved up I feel defeated. He lost his job for a few months and put all the bills on me. And to top it off I am 19 weeks pregnant. Trying to save up to get our own place. Well I go to clean the car out that both of us use but is in my name, and come to find I found pot. It's been a back and forth. He won't quit it and I feel backed up into a corner. Should I try and find a place within my budget for me and the two kids til he man's up or just deal with it. I feel like all I'm trying to do for our family is going down the drain because I feel like I'm the only one really contributing. I'm losing it what should I do?