thank you. I see my doctor 10 days from now. He is going to review the x-rays I had taken on Friday, and we'll discuss where to go from there. This pain came on rather suddenly and could be related to a strained, inflamed muscle that is impinging a nerve in my back. It could also be something going on structurally in my cervix. Who knows? Hopefully, we'll get to bottom of it and I will get back to my normal active self soon. He did mention taking up to 300mg, but instructions on the pill bottle say take 100 or 200 mg. Maybe I will call him on Tuesday if I'm not getting more relief and/or increase my dosage to 200mg. I'm not accustomed to taking medication, so I get a little anxious about introducing anything new to my otherwise very healthy body.