YDI – when I was 18, I was in hospital 3 times in the one year with excruciating pain (so bad I passed out each time). Every time I went into hospital the doctors told me I had a “grumbling appendix” and sent me home. No one ever mentioned endo to me back then. In hindsight, if the doctors decided to take my appendix out back then, they might have discovered endo much earlier…