Not sure my story is relevant, because I'm not 100% convinced I have it!
Very regular periods since started, bit achy day 1 and nurofen helped, but otherwise no issues with cycles.
TTC and had various ultrasounds and a hycosy- all clear, nothing abnormal noted. In total TTC 12yrs, lost 3 pregnancies and no medical issues ever found.
During that time, 1 ultrasound suddenly said I had endo in 1 ovary! The report mentioned 'ground-glass appearance' and was described as a chocolate cyst /ovarian endometrioma. I work in health care, so was very surprised by this. I'd always assumed endo was something you were born with, and not something that can suddenly occur later on!
DH and I also had rounds of IVF and unfortunately lost those pregnancies too. The cause was explained by then as 'old eggs'.
During my last round of IVF, the scan saw no signs of endo on that ovary! Its a mystery to me how on earth it can suddenly appear and go- if that is even what happened?
Sorry OP, I have no advice, but happy to answer questions about IVF or infertility tests x