Can you have sex after having menstrual blood streaks?

Patient's question:

No

Doctor's answer:

There are many causes of sexual intercourse bleeding, such as: vaginal wall abrasion, cervical erosion, cervical polyps, cervical cancer, submucosal uterine fibroids, etc. Other bleeding causes include: if menstrual abnormalities occur, it is believed that menstruation has already ended, resulting in premature sexual intercourse, which induces uterine contractions under sexual stimulation, causing residual blood in the uterine cavity to be expelled through the vagina.