Unstable menstruation during breastfeeding is a relatively common condition that does not require too much attention if there are no other problems, but should be taken seriously if there is abnormal bleeding or pain, which may be related to the presence of disease. Lactating women have relatively high levels of prolactin, which may affect menstruation and make it less regular. Therefore, erratic menstrual periods are common during breastfeeding and do not require special intervention if they are not accompanied by other symptoms. If there is abnormal pain or bleeding, it may indicate the presence of gynecological inflammation, such as vaginitis, endometritis, etc. It is recommended to consult a doctor in time to identify the cause of the disease and treat the symptoms. It is not possible to determine whether the menstrual cycle is normal solely on the basis of erratic menstruation during breastfeeding, but it is necessary to take into account the characteristics of the medical history and the results of other tests in order to make an accurate judgment, and it is recommended to clarify the cause of the disease under the guidance of a doctor.