What can cause farts to come from the urethra and menstrual blood from the anus?

Hello,

Welcome to icliniq.com.

I understand your concern.

As per your description, it looks like a rectovesical fistula (a connection between your rectum and urinary bladder). Rectovesical fistulas are less common in females as the uterus comes in between. As you are also passing blood from the rectum during your menstrual period, it means there is a connection between the rectum, uterus, vagina, and urinary bladder (both rectovaginal and rectovesical fistula).

A rectovesical and rectovaginal fistula usually does not occur without any pathology. The reasons for rectovesical fistula are:

1. A recent history of any pelvic surgery.

2. Pelvic malignancies like rectal cancer or urinary bladder cancer.

I would like to know whether there is any history of fecal matter from the vagina and whether there is a history of weight loss? Is there any bleeding from the rectum during the passage of stools other than during menstruation? Is there hematuria (blood in urine)?

I suggest you consult a colorectal or gynecology surgeon as soon as possible. I hope this will help you.

Thank you.