Hi there, thanks for asking. It is better not to smoke since smoking
provides some difficulty in oxygenation of the baby. It can lead to low birth weight
as well. Methaphetamine is really dangerous for the baby and can lead to increased risk or placental problem during pregnancy
. It could also lead to low birth weight. Marijuana is also problematic for the baby and it is better not to use it. The best way is not to use any of them at all. I hope you pass the period after well. Otherwise, you can tell the doctor to provide therapy for any possible thing. Best wishes.