It is not uncommon for pregnant women to experience their baby laying low in the uterus during the second trimester. This can cause discomfort and difficulty in walking or performing daily activities. There are several possible reasons for this phenomenon. One reason could be the position of the placenta, which may affect how the baby lies in the womb. Another reason could be due to the shape and size of your uterus, as well as your individual anatomy. Additionally, factors such as multiple pregnancies or a history of previous pregnancies can also contribute to a lower lying baby. It's important to note that every pregnancy is unique, and what you're experiencing may vary from others. If you have concerns about your baby's position or any associated discomfort, it is recommended to consult with your healthcare provider who can provide personalized guidance and advice based on your specific situation. They may suggest certain exercises or positions that can help alleviate discomfort and improve mobility.