Resting on your side, with your back mostly straight, can help to reduce sleep apnea. It can also cause pain in the neck and back since your spine stays aligned.
Sleeping on your stomach can directly put pressure on the nerves and can also cause numbness, tingling, and nerve pain.
Poor sleeping positions could even put pressure on the spine, causing your natural curve to flatten. This can also cause back strain and unpleasant pressure on your joints.
Sleeping on your left side is assumed to have the greatest benefit to your general health. In this situation, your organs are freer to get rid of toxins while you’re asleep. Although both sides are said to be best for sleep apnea and chronic lower back pain relief.
To get relief from the neck pain try to sleep on the back slightly reclined and on the back with a pillow under the knees.
Sleeping on the left side is the best sleeping position for hypertension because it relieves blood pressure on blood vessels that return blood to the heart.
You can sleep in any position you like in the first trimester, but it’s wise to start practicing side sleeping. A wealth of research shows that sleeping on the left side21 is the best sleeping position for you and the fetus in later pregnancy.
Lying on the stomach during pregnancy is unlikely to be very comfortable. More importantly, lying on your stomach should be avoided because it can put additional pressure on the fetus and reduce blood flow.
Stomach sleeping should be avoided once a person reaches about 16 to 18 weeks of pregnancy.