What causes insomnia during pregnancy?

The causes of insomnia in the third trimester of pregnancy generally include physiological changes, psychological factors, fetal factors, physical discomfort, environmental factors, etc. 1. Physiological changes During pregnancy, many changes will occur in the body, especially in the third trimester of pregnancy, the abdomen is obviously enlarged, the movement is inconvenient, and the movement such as turning over becomes difficult, resulting in limited sleep posture, and it is difficult to find a comfortable sleeping posture, thus affecting sleep. At the same time, changes in hormone levels will also affect sleep.2. Psychological factors Pregnant women may feel nervous, anxious, worried about the upcoming delivery, fear of pain during childbirth, accidents, etc. These bad emotions will keep the brain in an excited state and it is difficult to relax into sleep. 3. Fetal factors Fetal activity is relatively frequent in late pregnancy, fetal movement may affect pregnant women's rest at night. Moreover, the fetus gradually increases, and the pressure on the mother will also increase, which may lead to poor breathing and frequent urination of pregnant women. Frequent night rise will also interfere with sleep. 4. Physical discomfort may occur leg cramps, back pain and other conditions, these discomfort will make pregnant women feel pain at night, and then affect the quality of sleep. 5. Environmental factors Poor sleep environment, such as indoor temperature discomfort, noise, etc., will also make pregnant women difficult to sleep or easy to wake up in sleep.