When a woman feels uncomfortable in her vulva after sex, that is to say, there is pain, redness and swelling of the vulva, it may be caused by over-stimulation of the vulva and vagina due to over-stimulation of the vulva or vagina during sex or a longer period of time. It may also be caused by vaginitis or endometritis, which can lead to vulvar discomfort after sex. If after 1-2 days of rest, the woman no longer has discomfort in the vulva, you can observe for the time being and pay attention to keep the vulva clean and hygienic. If there is still vulvar pain, redness, swelling, bleeding or vaginitis, endometritis, then you need to go to the hospital to do gynecological ultrasound and routine leukorrhea test, according to the condition and the appropriate medication and sexual life guidance.