Vaginal lubrication is mostly provided by plasma seepage known as transudate from the vaginal walls. Oral sex is less risky than vaginal or anal intercourse. Anal intercourse is sometimes used as a substitute for vaginal intercourse during menstruation. Women commonly find it difficult to experience orgasms during vaginal intercourse. Women also experience uterine and vaginal contractions. Many reports of sexual abuse of either coerced vaginal or anal intercourse remain unreported. This is also known as vaginal intercourse or vaginal sex. This includes oral, anal, and vaginal sex. Transmission of HIV after one exposure to penetrative vaginal intercourse is 0.05 to 0.15 percent. These glands secrete mucus and a vaginal and vulval lubricant. O is taught to be constantly available for oral, vaginal, and anal intercourse. Most of these positions can be used for either vaginal or anal penetration. It is flexible and can be stretched or torn during first engagement in vaginal intercourse. Severity and pain during vaginal penetration varies. These PCR-based tests require a sample of urine, urethral swabs, or cervical/vaginal swabs.