If you are a smoker and get pregnant, you should quit. If you are not a smoker, avoid secondhand smoke. Many programs are available to help pregnant women quit smoking. Ask your doctor or nurse-midwife for information on quitting smoking while pregnant.
Smoking during pregnancy increases the risk of:1
If your baby or child is exposed to smoke after birth, he or she will be more prone to illness and breathing problems.
Citations
WebMD Medical Reference from Healthwise