Always have some bad dreams or even nightmares during pregnancy may be caused by the following reasons: First, the endocrine changes during pregnancy is very easy to cause physical performance and psychological changes, such as temper, mood, always easy to get angry and so on. Second, the pressure of pregnancy is relatively large, always worried about the pain of giving birth to a child in the future, worried about the pressure of raising a child in the future, heavy financial burden, or always worried about the body shape after pregnancy, more reason is that pregnant women are always worried about the birth of a child is not healthy, that is, worried about the health of the fetus, the above reasons are more common. Once you have bad dreams or nightmares, you must actively regulate your state of mind, appropriately talk to your family about your worries and anxieties, and learn to look for your family’s understanding and help is very crucial.