The safest position to go to sleep is on your side, either left or right. Research suggests that, after 28 weeks, falling asleep on your back can double the risk of stillbirth. This may be to do with the flow of blood and oxygen to the baby.
Sleep during the first trimester is more important than most of us realize, but for now those sleepless nights will most likely affect you more than the baby. Sleep deprivation in the first trimester has been tied to gestational diabetes mellitus and high blood pressure in the third trimester, as well as self-reported stress and depression. Some research suggests sleep-disordered breathing may be a risk factor for miscarriage.
Consider these tips:
** Favor your side. Avoid sleeping on your back, which can put the weight of your uterus on your spine and back muscles. But don't worry if you wake up on your back.
** Use pillows. Carefully placed pillows can help you get comfortable. Try placing a pillow between your bent knees or under your belly.
How should I sleep in early pregnancy?