Sleeping on your left side is thought to have the greatest benefits for your overall health. Even so, either side can offer benefits in terms of sleep apnea and relief from chronic low back pain. You don't have to stay with one side all night. Feel free to start on the left side and see how your body feels.
According to ancient traditions such as Vastu Shastra, the best direction to sleep is to the south. This theory is also supported by some recent research. This means that when you lie on the bed, your head points south and your feet point north. Many people struggle to find the right way to sleep.
Whether because of habits formed in childhood or simply because of personal preferences, some like to sleep on their side, while others like to lie on their backs. If you are pregnant, sleeping on your stomach or on your back will be uncomfortable or impossible for you. You'll feel more comfortable sleeping on your side. Prefer your left side to maximize circulation for both you and your baby.
Placing a body pillow or pillow under your belly can help relieve back pain. Place another pillow between your legs and bend your knees to be even more comfortable.