Hi Toby. You may find that your FS may want to put you on medication for a little while to help supress the endo coming back before you go through any more fertility treatments, but he will discuss that with you at your post op appointment. As for me, I had endo first removed in 99 and went on Duphaston for 6mths afterwards and then fell pg accidentally the first month I was off it. We weren't planning on having a baby for a while but I wanted to come off the meds and see how I was doing and what my cycles were up to etc cause I have long cycles and the duphaston gave me a 28 day one. I have never had issues with falling pg despite the endo and long cycles and have had one accidental pg, and three conceived on the first month of trying. The endo was never a problem again until after the birth of my 4th child and I had another lap in december last year where I had new adhesions removed from my uterus and bowel and also some adenoymosis was discovered this time. There are many, many women who conceive naturally and without trouble after endo. I really hope you are one of them.