It?s normal to feel more tired. You may also notice you need more sleep than usual. Try to get at least 8-10 hours per night. Listen to your body.
Try to sleep on your side to allow for maximum blood flow to baby after 20 weeks. Lying on your back can cause your blood pressure to drop. You may also find it helpful to put a pillow behind your back and between your knees to improve comfort. As your pregnancy progresses, use more pillow and frequent position changes to stay comfortable.