I hope this isn't too late! Be specific about the things that are bothering you. Drinking and smoking around you and your baby is NOT good! The emotional part may be mostly hormones because there are things my husband does that drive me crazy! But when I think about it, it's not something that causes potential harm to myself or my child. Sometimes it takes longer for men to understand what is going on inside you or believe that it is really happening. When we went in for our first ultrasound there was a HUGE change in my husband! He saw the baby move and could look at it's face and hands and little feet. He wasn't the most understanding at first but now he is so much more involved and compassionate. It may just take seeing it for the first time. If he didn't smoke and drink as much before your pregnancy it may be a reaction to the stress of becoming a father. Did you two talk about having a baby and did he seem ready and up for it? It may even take longer for him to decide to make changes in his life. For some men, holding the baby for the first time really makes a difference. Don't move so far away that he can't be a part of your child, especially when he hasn't really had a chance to bond with it. I don't think you should, in any circumstance have to be subjected to second hand smoke ESPECIALLY if you are pregnant. Your baby is harmed by it inside of you but when it is born it will likely be even worse. Be sure that your boyfriend knows that you aren't just being hormonal and moody but that you are concerned for the well being of your child. If he is really invested in your relationship and this baby, he will become more understanding as he is more involved. If not maybe it's best to move out of this situation.It is so important to be aware of what you want in a companion. That includes bad and unhealthy habits, especially those that directly affect your health. You must have really cared for him at some point and having to move on when you are about to share something so special like having a child is really hard, but you have to think of what's best for your child and you.