This is not a psychological factor. Maybe you have this habit, and then you unconsciously strengthen it. If you try to change the order or time of going to the toilet next time, you won't worry. If you don't know if it's habitual, you can check it, such as washing your hands before going to the toilet every time. After a month, you will find that after washing your hands, you will have the urge to go to the toilet, and the formation of conditioned reflex needs constant stimulation.