I have just being diagnosed with Endometriosis, how do I know what's caused this?

I am very sorry to hear about your diagnosis. Unfortunately, the causes of endometriosis are not known, but there are some things that put women at greater risk such as: • Retrograde menstruation which is when, instead of menstrual (period) blood flowing out of the body as usual, some travels backwards along the fallopian tubes and into the pelvis. This blood can contain cells from the endometrium. In some women, these endometrial cells stick onto the surfaces of pelvic organs and start growing. • Normal pelvic tissue can turn into endometriosis. This is called metaplasia. • Family history. Women who have a close relative (mother/sister) with endometriosis are up to seven to ten times more likely to develop the condition