It is normal to experience changes in your baby's movement patterns as you near the end of your pregnancy. However, if you haven't felt any movement for an entire day, it is important to pay attention and seek medical advice. There could be several reasons why you are not feeling your baby move, such as fatigue, position changes, or a decrease in amniotic fluid. It is recommended to lie down on your left side and focus on your baby's movements for about two hours. If you still don't feel any movement, contact your healthcare provider immediately. They may suggest further tests or monitoring to ensure the well-being of both you and your baby. Remember that every pregnancy is different, so it's always better to err on the side of caution when it comes to monitoring fetal movements.