I will try my best to answer your query.
Smoking is not only harmful to you but also to your baby during pregnancy
. cigarettes contain chemicals which lessens the amount of oxygen
needed by your baby. Oxygen is very important for helping your baby grow healthy. Smoking can also damage your baby's lungs.
Even the passive smoking
is also not accepted during pregnancy.
i advice you to stop smoking immediately.
Hope my answer will be helpful for you.