Nikki - all the IUI will do is force you to ovulate, and put DH's swimmers in the right plce. if you have tubal damage from the Endo, it won't help at all cos the egg won't get through - or if you do have partial damage, the risk of ectopic is greater

i don't want to say to not do IUI - our Gremlin is on her way because of an IUI - but i'd be asking the FS WHY he thinks IUI will work in your circumstances...