According to Healthline.
Pregnant mothers should be aware some professionals advise avoiding sleeping flat on their back, which can reduce the inferior vena cava and lessen oxygen to the placenta5. Pregnant women are repeatedly most comfortable sleeping on their sides with bent knees, which facilitates healthy circulation.
Professionals have traditionally said that the best sleep position when you’re expecting is on your left side — through your right is also perfectly acceptable. Past your first trimester, it becomes difficult to lie on your stomach for obvious reasons.
Many professionals also recommend that you avoid lying flat on your back all night long (but don’t worry if you roll over during the night and that way).
During the second and third trimesters, dozing on either side — preferably the left, if possible — is deemed by some professionals to be ideal for you and your baby-to-be.
This position allows for maximum blood flow and nutrients to the placenta (which means less pressure on the vena cava) and enhances kidney function, which implies better elimination of waste products and less swelling in your feet, ankles, and hands.
Tips on comfortable pregnancy sleeping positions
.Not used to lying on your side? Or constantly been a side-sleeper — but can’t seem to get any rest now that you’re wanting? Here are a few tips to tackle pregnancy sleep problems and get yourself comfortable sleeping in the side position:
.Use lots of pillows. Try crossing one leg over the other and settling one pillow between them and another pillow behind your back — or any other variety that helps you sleep.
.Get a special pillow. For extra assistance, try using a wedge-shaped pillow or a 5-foot full-body pregnancy pillow.
.Prop yourself up. If pillows don’t help, try sleeping in a semi-upright position in a recliner (if you have one) rather than the bed.
Keep in mind, that it’s ordinary to feel uncomfortable for a few nights or even a limited week. Your body will most likely adjust to a new position given time.