The main reason why you want to defecate all the time during pregnancy is that your uterus is growing, especially in the late stages of pregnancy, as the uterus grows and presses back on the rectum, the pressure on the rectum increases, and the increased pressure on the rectum stimulates a false reflex in the cerebral cortex, mistaking it for the need to defecate, so you have the feeling of wanting to defecate all the time, and this feeling will become more and more obvious as the uterus grows. However, there is no need to worry too much about this situation, as this symptom will disappear naturally after the pressure is lifted, so it will disappear naturally after the birth of a child, so there is no need to worry too much.