Hi,
I had endo for nearly 7 years before i was diagnosed. I also had a paper trail and when i went in for my lap, my private health fund told me it was pre exisitng and would only pay docotrs fees and the hospital fee was up to me. I argued until i was blue in the face as they deemed it pre existing before endo was diagnosed. I asked how periods could be anything but pre exisitng but nothing helped. The hospital ended up costing me over $2000 but it was a private hospital also. Good luck!!