Does this mean my endometriosis is back? Every month, for the last 4 months, on day 3 of my period I feel a scraping that is so severe I will double over. After the feeling, about an hour or so, I start to pass huge bood clots. I had laproscopic surgery about 6 (at 21) years ago where they removed my endometriosis followed by a shot that put me through menopause for 6 months. I know all this did was delay the endometriosis from coming back. I am wondering if this is a sign that it is back, or coming back. I haven't had any pain while having sex yet but I figure it is coming.