Off topic - had surgery...

Here is the information on what caused my problem and why I had surgery. My surgeon also did a colon resection.  I hope it explains it. No, it was not caused by my gastric bypass surgery.  Just something that has happened over the years.

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A rectocele (pronounced /ˈrɛktəˌsil/, REK-tuh-seel) results from a tear in the rectovaginal septum (which is normally a tough fibrous sheet like divider between the rectum and vagina). Rectal tissue bulges through this tear, into the vagina, as a hernia. There are two main causes of this tear: childbirth and hysterectomy.

Mild cases may simply produce a sense of pressure or protrusion within the vagina, and the occasional feeling that the rectum has not been completely emptied after a bowel movement. Moderate cases may involve difficulty passing stool (because the attempt to evacuate pushes the stool into the rectocele instead of out through the anus), discomfort or pain during evacuation or intercourse, constipation, and a general sensation that something is "falling down" or "falling out" within the pelvis. Severe cases may cause vaginal bleeding, intermittent fecal incontinence, or even the prolapse of the bulge through the mouth of the vagina, or rectal prolapse through the anus. Digital evacuation, or, manual pushing, on the posterior wall of the vagina helps to aid in bowel movement in a majority of cases of rectocele.