Had pain in lower back when I sit. Or bend over after ice for weeks thought might be kidney,so had my doctor run urine test,he found large amount of microscopic blood Went back 2 weeks later,same result Sent to urologist, found same under scope. So urologist did a scope,bladder is fine, He said I had leakage,which I don t Said I was constipated which I go everyday,maybe not a lot I m don t burn or hurt w hen I urinate.only pain is left lower back,and feels tenderl , which I go everyday,maybe not a lot.
Hello, I have studied your case. Your flank and back pain can be due to muscle strain or renal calculi. You may need x-ray and Ultrasonography. And also check your it B12 and it D3 level. Medication like methylcobalamine and analgesic will reduce pain. You can do yoga exercises and focus on spine extension exercises. You may consult physiotherapist for guidance. He may start TENS, or ultrasound which is helpful in your case. Hope this helps. Wish you a speedy recovery.  Take care