Anyone in Colorado and pregnant & smoking?

Ka

I'm 16 weeks and 2 days, I'm having twins a month early (due oct, they'll be born in Sep) I'm a daily smoker, I smoked regularly for a year even when I knew I was pregnant, question is, when should I stop? and how do I cope? (by coping I mean, how do I not throw up and be able to eat & deal with anxiety?)