After menstruation is clean, 2 days how is left next small abdomen aching to return a responsibility

Women in two days after the menstrual clean, the symptoms of pain in the left side of the abdomen, which is likely to be caused by pelvic inflammatory disease pain, this and menstrual hygiene do not pay attention to hygiene, causing bacterial infection caused by upward. In addition, it may also be because of the pain caused by appendicitis.