For decades doctors have told pregnant women not to sleep on their back at night. The reason being, if your’re lying flat on your back, the uterus may compress blood vessels and diminish the baby’s blood supply. However between interrupted sleep during bathing breaks and your baby’s kicks during the night, your not getting enough sleep anyway. . .
The fact is, during labor women lie on their back and that’s when the uterus is the biggest and can place the most pressure on the baby. So Surprise, go ahead have a good nights sleep and get comfy. You need all the rest you can get!