buzzing in lower back and headache
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I'm no doctor, but if I had your symptoms I would see a professional. I would wager that your spinal cord is being pressed,
compressed, or pinched.
Sounds to me like you have a neurological issue. Have you had any diagnostic imaging done, such as CT scan? That would give you more information about your spine. See a Dr soon.
I would of course check with your doctor, but I would go and see a good Chriopractor. I had migraines for over a year and a half and finally I found a good Chiropractor who helped me get rid of the migraines (I had them everyday single day). I have not had one for almost 2 months and that is a mircle. I had a neck problem and lower back proplem which is fine now. When I had my migraines the only thing the doctors wanted to do was put me on medicine (forever) and now I have my life back.
Good luck!!