Quiting

I was a heavy drinker and a casual smoker. I got pregnant. And I quit cold Turkey, it has only been 3 weeks but it feels like a lifetime. My S/O smokes, which makes it harder on me to quit. And pointless because of second hand smoke. Any women in the same boat? I have a heavy mental disorder and I get so depressed I cry. And I get mad and sometimes hopeful that he quits right along side me. But I dont want to be that controlling. I just dont think he understands what kind of boat I am in. And it is frustrating. I need advice