A feeling of discomfort around the pelvic region. Your hips form a bowl-shaped bone called the pelvis. This bowl of bone contains tissues and organs that are part of, or at least in contact with, your body’s urinary system. If the urinary tract (and this includes the bladder, connecting tubes, and the kidneys themselves) is inflamed, the pelvic bone itself and the connecting muscles will experience considerable distress. As the infection advances, tissues will become inflamed, and the swelling will put pressure on the pelvic bone itself. While this distress and discomfort are mild, it is still extremely noticeable whether you are sitting or standing upright.