It is common for pregnant women to experience a decrease in their baby's movements around the 34th week of pregnancy. This can be attributed to several factors, including the baby's growth and limited space in the womb. Restlessness or increased activity on your part may also affect how you perceive your baby's movements. However, it is important to monitor your baby's movements and contact your healthcare provider if you notice any significant or prolonged decrease in activity. They will be able to assess the situation and provide appropriate guidance based on your individual circumstances.