Frequency of napkin replacement

Menstrual blood is rich in nutrients, it is easy to become a "medium" for the growth of a large number of bacteria, so sanitary napkins should be replaced frequently, it is recommended to replace every 2~4 hours. The harm that may be caused by not replacing it in time includes: easy infection with reproductive system diseases, such as mild fever, genital inflammation, skin itching, ascending infection, excessive vaginal discharge, local burning sensation, lower abdominal pain, or accompanied by fever, nausea and other symptoms; Prone to urinary system infections, such as urinary tract infections, cystitis, pyelonephritis, frequent urination, urgency, dysuria and other symptoms; It can also cause back pain, fatigue or fever.