Am I wrong to feel this way?

My husband and I had a huge blow out the other day (he's still sulking). Basically 2 years back when we decided we wanted to start trying for a baby, BOTH of us made the decision to quit smoking cigarettes. However, while I quit and haven't smoked in 2 years he continues to smoke. Over the last year and half I've been undergoing tests, surgery and medication for unexplained infertility. His reports are fine.

We were due to start IUI this cycle however they discovered a cyst on my right ovary which means we need to push our IUI plan to next cycle. I came home very disappointed about this only to see him sitting and smoking. I couldn't bear it anymore and told him, rather yelled at him that the least he could do to support us through all of this is to quit smoking. He feels I'm overreacting and that he's reduced from a packet a day to 4-5 a day and that's sufficient.

I know it's hard to quit but till he does I don't feel like I have his 100% commitment in this process. I am so exhausted and overwhelmed with everything and just feel alone. And now he's not even speaking to me properly.