A pH of 4.8 is alkaline and indicates that the normal vaginal pH has been disrupted and needs to be corrected promptly. The change in the pH of the vagina can lead to a decrease in the vaginal self-cleaning ability, which can lead to opportunistic infections, as seen in bacterial infections, or bacterial vaginitis. Local douching with an acidic vaginal douche can help to restore local resistance and pay attention to local hygiene, especially during special times. The normal vaginal pH is around 3.5. Too acidic or too alkaline is a sign of infection. Observe whether there are symptoms such as increased leucorrhea, vulvar itching, tingling, change in leucorrhea color, leucorrhea odor, or even abdominal pain.