What baby docs see. For a view of what doctors see before and after a baby is born, look at these answers also :) https://www.Healthtap.Com/user_questions/46059-how-will-smoking-harm-a-growing-baby.
Usually nothing. But do not count on it! most women smoke with little/no consequence for their fetuses, however an unlucky few will have horrendous complications that scar their families for ever. Stop as early as you can as a sacrifice for your unborn infant.