What causes bleeding in the male lower body during sex?

Patient's question:

Patient Gender: nan
Patient Age:
Detailed Condition and Purpose of Consultation: Found that the condom was full of blood after sex, which was terrifying. Then discovered a broken area on the lower body. Is it because the foreskin retracted?
Medical History: None
Previous Diagnoses and Treatment History and Outcomes: None
Ancillary Examinations: None
Other: None

Doctor's answer:

Consider hematospermia. The causes of hematospermia include: inflammatory conditions of the reproductive tract, such as prostatitis, seminal vesiculitis, urethritis, epididymitis, prostatic calculi of the spermatic cord, and urethral-bladder calculi. It is recommended that you go to the hospital to determine the cause and receive further treatment. Generally, it may be considered that there could be vaginal laceration. It is advised that you rest more, relax your mood, pay attention to hygiene, and avoid sexual activity until the bleeding has stopped to prevent infection. If the bleeding duration exceeds 7 days, the vaginal bleeding is heavy, or severe abdominal pain occurs, it is important to seek medical attention promptly for examination and treatment.