A pH of 4.6 is not normal. The pH of a woman’s vagina is usually acidic, ranging from 3.8 to 4.5. If the value is too high than 4.5, it is alkaline, which will cause an imbalance in the vaginal flora and increase the chance of infection with bacteria and viruses. However, the pH level alone cannot confirm the disease and other routine tests are needed to determine this. If you have just had intercourse, there is a certain physiological change in the vaginal environment and the acidic environment has decreased, so it is usually observed first. If you have bacterial vaginal inflammation or other gynecological diseases, it may indicate a low cleanliness level of less than 2 degrees and may reveal clue cells. It is also possible to have trichomoniasis. After diagnosis, both spouses should be treated together, pay attention to vaginal hygiene and not to have intercourse during menstruation.