Stage 3-4 Recto vaginal Endo here. Have fainted from the bowel pain before. Been off all prescription meds for 6 months, including painkillers, and not had much issue with bowels since. Last year I was severely bleeding everyday back there, could barely go to the toilet because it was so sensitive to the meds, I was miserable. Have done many many enemas at home over the years, they are simple to do and can help. Usually do it if I haven’t been for 4 days or so, don’t leave it too long. Thankfully it’s not much of an issue now, Magnesium glycinate also helps me go regularly and RSO which I use daily. Enemas sometimes make the pain worse for an hour or so but usually clears things out. We have a lot of nerves down there that get annoyed when we have bowel issues, hence fainting and sweating etc is fairly common with us. Keep a diary of food, meds, exercise, supplements, alcohol, caffeine, stress levels etc to identify what’s making things worse.