Hi i am Dr Ahmed Aly thanks for using healthcaremagic site , I had gone through your question and understand your concerns .. In my opinion it could be a kind of sciatica due to nerve compression thus causing this kind of radiating neuropathic pain . of course lack of exercise , bad sleeping or sitting postures , heavy lifting , vigorous movements , can cause that kind of painbut dont worry sometimes it subsides simultaneously . You may begin with spinal straightening exercise , physiotherapy , hot massages with topical gels and even yoga helps . use painkillers like advil tab when needed , B12 vitamin supplementation ,muscle relaxants will be effective for now . If pain persists i may recommend further imaging by MRI and a neurosurgeon point of view for proper evaluation and management . Please click and consider a 5 star rating with some positive feedback if the information was helpful. Wish you good health, Any further clarifications feel free to ask.