please don't douche. Dr. Vrangalova confirms there's zero need for vaginal douching or even using heavy soaps. Douching is actually really bad because it alters the pH of the vagina, which makes it more susceptible to infection and bacteria. Rarely is there an instance where someone needs to douche, which is why Dr. Vrangalova suggests sticking to a mild soap to keep everything squeaky clean. 6. It's a good idea to use a condom. Oral sex is still sex and can transmit many STIs, including throat chlamydia, gonorrhea, HPV, and herpes, says Dr. Vrangalova. If STIs are a concern, you should consider using a condom or dental dam. Cobb notes this is especially important if you're playing with a new partner or don't know their STI status.