Hi, welcome to the ehealth forum and I am glad to help you.
You seem concerned by the pain in left hemiback coming to the front on left side of abdomen. You tried pain pills for a pinched nerve but that is not helping your cause probably. You have also made a mention of lupus and Raynaud's syndrome.
Whenever there is pain in left flank it is pertinent to rule out left kidney pathology with ultrasound and complete urinalysis. The pain could also be due to pelvic pathology. You must consult your personal physician for definitive diagnosis as the same is not possible online.
Hope this helps. Take care.
Note: This post is not to emphasise final diagnosis as the same cannot be made online and is aimed just to provide medical information and no treatment suggested above be taken without face to face consultation with health care professional.