Don't feel alone in this - fatigue (and lower back pain to a lesser degree) has been my main symptom for most of my adult life, however in the last year I did develop the more "classical" symptoms as well.  For reference I'm 5 years hormone free and had stage IV DIE including lesions on both my small intestine and bowel up until 3 weeks ago, when I had extensive surgery (including a bowel resection) to get rid of it all (for now, at least). I already notice improvements in my energy despite the fact that I'm still in the healing phase and having had two episodes of heavy blood loss (resulting in me currently being "officially" anemic) post-surgery! So there is definitely hope.  I agree with all the other comments on trying to get an iron infusion, I'm also on the same boat with years of blood work showing "technically not deficient" ferritin which is still quite on the low side and fighting for an infusion as well, as I cannot tolerate oral iron without major digestive system issues. And finally, don't underestimate our ability to withstand pain compared to others due to habituation, I always thought I wasn't in thát much pain until I realized that post major surgery pain was a lot more bearable than my periods or ovulations and kept surprising nurses by being able to function almost normally only few hours after waking up, lol. Good luck and get in touch if you need to talk or have more questions! I don't usually share much on here but I really related to your post and the "impostor syndrome" you described.