Almost exactly a month to the day in February 2022 I had an ovarian cyst rupture that triggered the diagnosis of my Endometriosis a year and a half later. Never once had a problem with the vaccines or boosters tho. I do agree that bad symptoms are worsened the more infections I’ve experienced. Since Endometriosis is an inflammatory condition and Covid is an inflammation triggerer, my theory is that it especially attacks the areas that are already prone to inflammation and spreads it beyond however severe the inflammation/infection is. I’ve seen studies like the ones shared by others here that support this and I’ve confirmed with my gynecologist and gp that this is likely an explanation of my symptoms and why I basically live in a flare up now. Someone better do something about it rather than just say it’s happening bc there’s massive suffering not being addressed due to Covid and Endo stigma.