It is common to experience difficulty breathing, pressure in the lower stomach, and discomfort in the butt during pregnancy. These symptoms can be caused by various factors such as the growing uterus putting pressure on the diaphragm, hormonal changes affecting digestion, or even normal pregnancy-related discomfort. However, it is always important to consult with your healthcare provider about any concerning symptoms you are experiencing. They can evaluate your specific situation and provide appropriate guidance. If you are experiencing severe or worsening symptoms or have concerns about your baby's well-being, it is advisable to seek immediate medical attention by going to the emergency room.