Hi i am Dr Ahmed Aly thanks for using healthcaremagic site , I had gone through your question and understand your concerns .. That could be a muscular spasm or a kind of nerve compression due to heavy lifting , vigorous movements , trauma or injury , bad sitting or sleeping postures . These given symptoms may show some sciatica due to neurovascular inflammation which may subsides simultaneously within days or extend to chronic pain if un treated properly . For now i may suggest advil tab when needed , hot massages with topical gels , muscle relaxants , B12 vitamin supplementation will be effective for mild cases else i recommend MRI on spine 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