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If you notice heavy bleeding during or after sexual intercourse, and the bleeding lasts for a long time, you should think about whether there is a vaginal laceration. Vaginal lacerations are also seen in vaginal deformities, such as vaginal septum, double vagina, and vaginal stenosis caused by vaginal dysplasia. After vaginal plastic surgery, hymen repair, vaginal mass removal and hysterectomy, sexual intercourse may easily cause damage if the vaginal wound heals poorly. Improper sexual intercourse posture and position can also cause vaginal injury and bleeding. What cannot be ignored is that sexual intercourse during the puerperium or lactation period is prone to vaginal injury and bleeding, because the vaginal mucosa is fragile during this period and is easily injured when impacted during sexual intercourse.

Secondly, inflammation of the reproductive tract, such as cervicitis, vaginitis, and endometritis, are also the most common causes of vaginal bleeding after sexual intercourse. Common vaginitis include fungal vaginitis, trichomonal vaginitis, and senile vaginitis. Generally, vaginitis has the symptoms of vulvar itching and increased leucorrhea. In severe cases, vaginal mucosal edema, congestion, or ulceration may occur. During sexual intercourse, the vagina will be stimulated and bloody secretions will flow out, and there will be a burning sensation in the vagina. You should not have sexual intercourse while suffering from vaginitis to prevent the inflammation from getting worse. Cervical erosion and cervical polyps are both chronic cervicitis. Women of childbearing age suffer from cervical erosion or cervical polyps. Mild cervical erosion will not cause bleeding after sexual intercourse. If bleeding after sexual intercourse occurs frequently and the amount of blood is small, especially when secretions flow out after sexual intercourse, you should think about whether there is severe cervical erosion or larger cervical polyps. You should seek medical examination as soon as possible.