Can you have sex with your girlfriend during menstrual period after foreskin surgery?

Patient's question:

Medical Description: Male patient, 19 years old
Condition: Swelling not subsiding after circumcision surgery
Incident: The suture area came into contact with the patient's girlfriend's menstrual blood
Treatment history and effectiveness: The doctor said the swelling would gradually subside, but it has not improved and sometimes even worsens
Desired help: It has been more than two and a half months since the circumcision surgery, and the swelling still persists. During this period, the patient had sexual intercourse. Today, while having sex with his girlfriend, she had her period and her menstrual blood was in the bathtub. The patient wants to know if he will be infected with bacteria in the water and what will happen if he is infected.

Doctor's answer:

Hello, sexual activity during menstruation does not lead to pregnancy because there is no ovulation during this period.
Suggestion: During menstruation, the uterine cavity forms extensive fresh wounds. If sexual activity occurs at this time, it may introduce bacteria, leading to genital infection and inflammation. The pelvic area is already congested during menstruation, and sexual activity can worsen this congestion, resulting in increased menstrual flow and prolonged menstruation. Some women may experience discomfort before menstruation, such as headaches, nausea, chest tightness, psychological tension, and weakened physical function. Others may have cramping or dull pain in the lower abdomen before or during menstruation. Engaging in sexual activity during menstruation can easily lead to various gynecological diseases in women, such as endometritis and pelvic inflammatory disease. In severe cases, it may even cause fallopian tube blockage, resulting in lifelong infertility.