11/09/2026
Pain is not the only symptom of endometriosis and this single fact is responsible for so much missed and delayed diagnosis.
Between 20 and 25% of women with endometriosis have no pain symptoms at all, which means a full quarter of cases are quietly progressing while everyone involved assumes no pain means no problem.
Around 40% of women experiencing infertility will be found to have endometriosis, and a significant number of them find out this way, not through period pain, but through a fertility workup after months or years of being told everything looks normal. If youve had unexplained infertility, there is up to a 50% statistical chance that undiagnosed endometriosis is a factor, which is a number that should be part of every fertility conversation and somehow rarely is.
What actually shows up instead of pain can be heavy or irregular bleeding, chronic fatigue, bloating, or nothing noticeable at all until conception becomes the problem.
This is why preconception care matters.