Smoking with a baby

Hi! Im a FTM and im 17. I smoke cigarettes, specifically menthol. Im 3+1 weeks along, just found out today. How can i stop smoking to help my baby? Any activities i could do? I dont have an option for therapy or meeting in groups (kinda like AA?) ive been smoking off and on about 2 1/2 years almost 3. I smoke on average 4-5 a day. I buy a new pack about every 3-4 days if that helps.