I was diagnosed w endometriosis 14 years ago would that affect my motility of my bowels?

Absolutely: Endometriosis is a condition where endometrium, which normally grows inside the uterus, grows outside the uterus and implants on the abdominal wall and abdominal organs. This typically causes lots of pain, timed with the menstrual cycle. It can also cause a variety of bowel problems including both constipation and diarrhea.

Bowel Dysmotility: Yes, very hard to answer in 400 words. Look at dr. John mathias' work on bowel motility. It appears that endo is associated with a rare change in bowel contraction frequency that can cause pain. Treatments for this are not mainstream pain or gyn type treatments. Nutritional changes and meds that change bowel contractility can help. Endo on bowel can also cause bowel symptoms.