As to your boyfriend, keep telling him how important this is to your baby and you. Give him big compliments for trying too! good luck
Sounds like you are doing really well sweetie. Stopping smoking is really hard. You are down to those last 4, maybe drop to 2 and then be done cold turkey. Have a go to thing you do every time you want to smoke that would deter you??? But I think you are doing well. That's a tough habit to break!!