Article in English: Sleeping on your side allows for good blood flow for both you and the baby, and helps to prevent unwanted problems from developing. Your left side is the preferred side, but either side is fine.  Bend your knees and place a pillow between your legs. As your pregnancy advances, you may find additional relief from placing a pillow behind your back. Try using extra pillows to prop your head up if you are having trouble with indigestion or heartburn during the night. Try placing a small pillow beneath your abdomen, in addition to the one between your knees, if you are having trouble with back pain. Place your hands in a neutral position as you get comfortable to fall asleep. Relax your hands and be sure your wrists are not bent at all. If possible, rest your hand and wrist on a pillow slightly higher than your chest. Be sure this is a comfortable position for you.  By raising your wrist, you are helping to reduce the amount of fluid and swelling that is pressing on the nerve. Some women find it helpful to place their hand on a small pillow, sliding it between the pillowcase and pillow. This helps them to maintain a neutral hand position throughout the night. As your pregnancy progresses, you will have extra weight and body changes that may cause unwanted symptoms to develop depending on your sleep positions. Plus, you may develop new problems that can be prevented by sleeping on your side.  Possible complications caused by sleeping on your back include back pain, hemorrhoids, problems breathing, heartburn and indigestion, blood pressure changes, and a decrease in circulation to your own heart and to the baby. Sleeping on your stomach causes prolonged pressure against your abdomen. This position can put pressure on major blood vessels and arteries interfering with the blood supply, plus this position will not be very comfortable as your pregnancy progresses. Do not place your hands under your cheek or neck area, or under any part of your body. This action adds pressure to your wrist area that is already...

Summary in Indonesian:
Tidurlah dengan posisi miring. Biarkan tangan Anda rileks. Sebaiknya jangan tidur dengan posisi telentang atau tengkurap. Hindari tidur dengan menindih tangan. Kompres pergelangan tangan dengan es sebelum tidur. Gunakan bidai atau penahan pergelangan tangan.