Pregnant patients may cause more frequent trips to the bathroom at night. The reason is that after pregnancy, the uterus gradually increases in size and puts pressure on the bladder, thus reducing the actual capacity of the bladder, so the patient tends to go to the bathroom more often. At this time, there is less urine stored in the bladder, and when a certain amount is reached, it is necessary to urinate, causing the patient to have the urge to urinate. Especially as the pregnancy cycle gradually grows, the uterus becomes larger and larger, and the pressure on the bladder becomes more and more severe. At this time, the number of trips to the toilet at night may gradually increase, and for severe patients even urinary incontinence may occur. Especially when the abdominal pressure increases with coughing, it may cause the patient to urinate involuntarily, leading to urinary incontinence. Generally speaking, the symptoms will gradually ease after the birth of a child.