Smoking and pregnancy?

I smoked when I was pregnant. I wasn't a heavy smoker either at the time. My OB/GYN told me not to quit because it puts more stress on the baby if you do. This is because you stress out from the nicotine effects and wanting a cigarettes. But the best thing to do is talk to your OB/GYN and see what they say. My daughter was healthy 7 lbs 1 oz. They always tell you smoking causes low birth weight. Not always true.