The next menstrual period after surgery for endometrial polyps will be counted from the date of the surgery to the date of the next menstrual cycle. Normally, when an endometrial polyp is surgically removed, not only the polyp is removed, but also a corresponding endometrial curettage is performed. After the operation, the endometrium is in the early hyperplasia stage, at its thinnest, and then in the hyperplasia and secretion stage, stimulated by oestrogen and progesterone, and still evolving according to a complete menstrual cycle. Therefore, the next menstrual cycle will still follow the normal menstrual cycle, except that the date will be counted from the date of surgery.