I smoked with all my pregnancies and they were all fine, and my son is measuring larger this time around. Everyone carries differently. If you're a smaller stature to begin with, you're gonna be small during pregnancy (majority of the time)... Don't feel judged by other people because it's very very hard to quit smoking!!! And the baby's getting plenty of oxygen!
I'm 36 wks n my bby is bigger then normal n I smoke and he also has no problems also smoked with my other 3 children and they were 8lbs and I was big with all 3 so it just might be different with different women I'm not sure
Smoking cause the baby to have very little oxygen which can cause it to measure small, or be premature, as well as other things like heart and lung defects