Fasting: Fasting for a Pregnant Woman Approaching Delivery
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 1697
Fasting is not obligatory for a pregnant woman approaching the time of delivery if it is harmful for her or the unborn child. Such a woman must give one mudd of food to a poor person for each missed fast, and she must make up the fasts she did not keep.