Hi Toby,
After 3 failed IVF cycles (2 stimulated 1 FET) I had a laparoscopy in 2001 to remove what turned out to be a quite severe case of endo and to try and repair a blocked fallopian tube. I went on to have 3 more IVF attempts before I fell pregnant naturally in 2003 with my DS and then again with my DD in 2007 (she was the result of an FET using embies we had frozen before my DS was born). I was told that the endo will probably come back within two years but as far as I know it never did and now have two beautiful children!
I wish you all the best.
Monica