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Is the pain in my lower back a kidney stone?

I have pain in my lower back but it is only on the left side. Is this a kidney stone? I'm only 33 years old but I figure you can probably get them at any age. It pretty much hurts throughout the day, I've been taking ibuprofen for the pain. How can a doctor tell if I do have a kidney stone and what will they do about it?
Kidney stones can certainly present with pain, and this can be located in the region of the lower back / flank area. Depending on where the stone is, it may also radiate lower down and around the front of the pelvis, and occasionally into the groin. If the stone is irritating the lining of the kidney or ureter (which connects the kidney to the bladder), then one may notice some blood in the urine. Kidney stones can certainly develop in a man in his 30s, but the risk of developing stones does go up with age. To help determine if you have a kidney stone, your doctor can conduct a more thorough medical history and physical exam to help rule out other causes of back pain. The urine can be analyzed for microscopic hematuria (the presence of red blood cells). Imaging with either ultrasound or CT scanning can help visualize the stone and let your doctor know where in the urinary tract it is located and how big it is. Depending on the size and location, a treatment plan can be discussed. Generally stones that are larger than 6 mm may need some form of intervention (such as shockwave therapy), and those that are smaller usually pass with increased fluid intake +/- the use of medications to help move them along. Since the cause of your back pain is not clear and you are not getting relief with Ibuprofen, it is advised that you consult with your primary care doctor for further workup.
This answer is for general informational purposes only and is not a substitute for professional medical advice.
If you think you may have a medical emergency, call your doctor or (in the United States) 911 immediately. Always seek the advice of your doctor before starting or changing treatment. Medical professionals who provide responses to health-related questions are intended third party beneficiaries with certain rights under ZocDoc’s Terms of Service.
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