Hello, Welcome to Health Care Magic. Thanks for writing. I am Dr.Saddiq-ul-Abidin. I have read your question completely, I understand your concern and will try to help you in best way possible. I am sorry to know about the problem you have been facing, Your pain does not seem to be related to endometriosis or PCOS, it is quite a characteristic pain which happens in nerve impingement due to muscle spasm or spine issues. That s why when there is pressure on the nerve while you sit , the pain shoots down along the nerve pathway all to way to your thigh. There are certain measures which you can take for it some will benefit in short term and some will benefit in long term. 1) Take Rest and avoiding sitting when you can. 2) Warm compresses, warm water bottle under this area will help to relieve muscle spasm and will loosen up inflamed tissues. 3) Rubbing voltral gel over the area can be helpful. 4) You may be suffering from low bone density because of low calcium and vitamin D due to your hormonal imbalances I will suggest you to take Vitamin D and calcium supplements 1 tab daily. 5) You can take Centrum for women daily one tablet. I would also suggest similar patients in my clinic to take muscle relaxant like Movax 4mg twice a day this really helps. You are already taking a heavy pain killer so I would not suggest you to increase the dose. I this doesn t settle in a week or so, Get a check-up by Neuro-spinal surgeon he might want to get your X-ray lumber spine done, or you MRI spine, this will make causes and treatment options clearer to you and your doctor. Hopefully things will settle down soon. I hope this answered your question.If you have more queries I am happy to answer.Otherwise rate and close the discussion Regrads. Dr.Saddiq ul Abidin M.B.B.S(Licensed Family Physician) Resident Medicine.