If you wake up with back pain, it is worth trying another position and using pillows to alleviate those morning aches. The best position for sleeping is a neutral position that keeps your spine in neutral alignment. Lying on your back does just this, distributing your weight evenly and reducing pressure points. This position won’t work for everyone, especially if you snore, have sleep apnea, or are pregnant. If you sleep on your side, adding a pillow between your legs can help keep good alignment. Stomach sleeping in known to put stress on your neck and spine, so if you are experiencing back pain and usually sleep on your stomach, you should try another position. Since changing sleep positions can prove to be challenging, a tip for stomach sleepers who can’t seem to switch is to try is putting a pillow under your abdomen to support your pelvis. This helps relieve some of the stress on your back. Here is an article from Heathline.com that recommends other ways to use pillows in various sleeping positions and tells you specifically what parts of your back are benefitted.
5 Best Sleeping Positions for Lower Back Pain (healthline.com)