One can create a habit and if that happens, the baby will become more dependent in the uterus and have accompanying problems at birth. Some data suggest that if pregnant women are regularly taking barbiturates (such as sleeping pills) can reduce their baby's IQ and cause problems in the metabolism of bilirubin at birth (which can cause jaundice or even brain damage). Even with the newer sleeping pills, prolonged use is not recommended.
That is, there is no problem if you take regular medication for sleep if, say, fly across the ocean and want to sleep. But when it comes to insomnia or feeling discomfort during the night, sleeping pills are not recommended.Instead, empty the bladder, to support the bag, then read Gricni or something and go to sleep normally (without using the pill).
Several drugs are classified as Class B drugs, which means that it is assumed that they are safe for pregnant women based on animal studies, but are not available to the appropriate research done on humans. Other prescription drugs are classified as Class C drugs. It is uncertain how effective these drugs are safe, research conducted on animals showed a lower risk to the fetus. Drink any sleeping medicines are classified into A-class - the one where the research performed on humans demonstrated that there is no danger to the unborn baby.Therefore, sleeping pills are not an adequate solution to sleep at night during pregnancy.