What is causing pain in lower left side of back?
Patient: I am having sharp pains in my lower left side of my back/stomach - It started in my back and radiated through to the front.  Last month my period was very wierd - 1 1/2 days late, very light... But I have also had kidney stones int he past... What do you thiNK? Doctor: Hello,I had gone through the case and found that it might be related with renal stone pain.So go for the ultrasound of lower abdomen and urine test. After that take proper treatment .Hope my answer will be effective for you.Thanks