I would also say have the surgery first . I tried for 11months with Kaitlyn - had endo removed and discovered only one of my tubes was opened. Dr advised IVF and we said we would try insemination first ( have you looked into that option yet?...means you are given help to ovulate and then when ovulating they insert your husbands swimmers straight in there!!).

Anyway we decided to try in semination for 3months before IVF ...we feel pregnant waiting for the new cycle to begin after the operation ..a miracle I know ..but it does happen.

I think you need to do what you feel most comfortable with first and it sounds like the operation is the one you would prefer. The one thing I have found is that once you tell the Dr what "YOU" want they are usually pretty ok with it and agree with your choice..

Good luck ...I hope you fall naturally very soon!