Stresses and pregnant...

Can anyone give me advice? I am stressed bad... My SO is addicted to suboxone but when I found out I was pregnant I immediately gave him an ultamatium he had to either choose me and the baby and do his best to quit or leave me and continue his addiction... He choose to stay but honestly he has lied to me about quitting 3 times before ..... I am hurt and have a hard time trusting him along with the fact that when he is off of it he completely ignores me and wants to hear nothing about the baby ...: he hasn't done anything in 6 days ... So I am proud of him but he won't support me emotionally he just shuts me out what do I do?