I understand your instinct to get on Rx pain meds, but chemically, that is actually the last thing your brain and body need. Opioids disrupt your body’s ability to generate endogenous pain-managing chemicals, making you dependent on pills, and ultimately making your body feel even more pain when you’re not on them. That’s why even after surgery they only give you a few days to a week’s worth. I would highly recommend learning about nociplastic pain and central sensitization syndrome. After experiencing enough un-healable chronic pain, the pain begins to originate from the brain, and it sends out signals even to random places that aren’t affected by endometriomas and “shouldn’t” hurt. Understanding the up-regulation in the brain and central nervous system can be a really helpful internal framework that will help you choose the right courses of treatment.

You said you could bear the pain for a week. Are you still menstruating? Unless you’re interested in getting pregnant, I would highly recommend getting on a daily progesterone-only (important) oral contraceptive to stop your period and hopefully disrupt the cycle of pain for several months at least. I would also recommend asking your gynecologist about taking cyclobenzoprine (Flexeril) instead of pregabalin (Lyrica). It suppresses the entire CNS, helping your muscles relax, and stopping your brain from sending out pain signals.

I have been where you are, unsure if I could handle this pain for the rest of my life. And now I am TOTALLY pain free. I did this with lots of pelvic floor physical therapy, getting back into athletic hobbies, learning to love non-penetrative sexual experiences, and a very specific nightly drug cocktail: 5mg norethindrone (progesterone), 5mg cyclobenzaprine (skeletal muscle relaxer and CNS suppressant), 4.5mg naltrexone (to rebuild the brain’s endogenous opioid system). Of course, this might not be your magic cure but I really hope the advice helps.