It is not uncommon for a nurse to be unable to feel the baby during early pregnancy, especially in the first trimester. At around 11 weeks, the baby is still quite small and may be positioned in a way that makes it difficult to feel through the abdomen. Additionally, factors such as body composition and positioning of the uterus can also affect how easily the baby can be felt. The ability to feel the baby's movements typically improves as pregnancy progresses and the baby grows larger. If you have any concerns or questions about your pregnancy, it is always best to consult with your healthcare provider who can provide personalized advice based on your specific situation.