LovesBulldogs79

Hello,
Totally new here and hoping to find some advice about my boyfriend's addictions. I've gone through heroin, alcohol and suboxone (currently) addictions with him and am at my breaking point. I actually just found an empty Ativan bottle in his desk drawer. 60 pills were given to him on 11/22. Now I know why he's been falling asleep by 7pm every night. I just figured it was subs. I'm 15 weeks pregnant... Eveything was going great and he was on his way to sober when I conceived. Or so I thought. Feeling like I made a huge mistake that will link me to him forever now. Don't consider myself naive, but here I am. There's been so many broken promises and harsh words ( from me). Feeling stuck. Hopeful that he will stick with sobriety (he's entering a recovery program on Monday) but also more worried that he won't.
Probably the worst thing I've ever dealt with in my life. I'm 35.
He amount of anger and resentfulness I feel can't be healthy but I feel like I have nowhere to go with these emotions. Any advice or insight would be so greatly appreciated.