Suggest Remedy For Pain In Groin,lower Back And Upper Buttock Area

Hi, I will try to make this short and detailed...I started having hip pain during my 1st pregnancy 8 years ago..I was 17..it continued but was managable after my 2nd pregnancy it was constant .5 years ago. during both pregnancies i would be unable to walk some days becuz of the pain and pressure..it has been almost years on and off pain meds, i have tried injections therapies of all kinds and a right hip arthroscopy..cartilage damage from bone spurs.. in 2008. which brought relief for about a month. one doctor tells me it is my SI joint and the pain will only get worse and nothing can be done for me, then another thinks a hip replacement possible resurfacing first will bring much relief. what should i do. my major source of pain is in my groin lower lower back upper butt area. not lower back i know the difference when my lower back hurts. what is your opinion on what can be causing my pain?? I am 27 now. Thanks for your time, I look forward to hearing back from you. Tina