Most doctors and the American College of Obstetricians and Gynecologists (ACOG) recommend that women don't douche. Douching can change the delicate balance of vaginal flora (organisms that live in the vagina) and acidity in a healthy vagina. One way to look at it is in a healthy vagina there are both good and bad bacteria. The balance of the good and bad bacteria help maintain an acidic environment. Any changes can cause an over growth of bad bacteria which can lead to a yeast infection or bacterial vaginosis. Plus, if you have a vaginal infection, douching can push the bacteria causing the infection up into the uterus, fallopian tubes, and ovaries.