Can pregnant women sleep on their back?
Whether a pregnant woman can sleep on her back needs to be determined according to the specific situation. If she is in the early stage of pregnancy, sleeping on the back is generally acceptable. However, during the middle and late stages of pregnancy, sleeping on the back is not recommended. Detailed explanations are as follows:

In the early stages of pregnancy, the fetus is relatively small and the uterus has not significantly enlarged, so sleeping on the back does not cause adverse effects to the fetus or the mother. At this time, the pregnant woman can choose her sleeping position based on personal comfort, and sleeping on the back is feasible.
As pregnancy progresses into the middle and late stages, the uterus gradually enlarges, and it is not advisable for the pregnant woman to sleep on her back for extended periods. Prolonged supine position may compress the inferior vena cava, reducing venous return to the heart and potentially causing supine hypotensive syndrome. Symptoms such as dizziness, palpitations, nausea, and shortness of breath may occur.
When choosing a sleeping position, pregnant women should consider their gestational stage. It is important to ensure a quiet and comfortable sleep environment and sufficient sleep, which will help maintain maternal health and promote fetal growth and development.