Back pain won't cause neck/jaw pain, but neck/jaw pain can cause back pain. The effects of gravity apply forces downward. It sounds to me like it could be a problem in the upper cervical area (top of the neck), just beneath the skull.
Here's a list of specialists in Connecticut... Hopefully one of them is close by: http://tinyurl.com/cdsyxt
Adam Tanase, D.C.
www.drtanase.com
also somestimes the pain under my jaw last for 15 min or so then it goes away then it will come back my lower back hurts and so does my lower back and right leg but the pain is mainy under the left side of my jaw but i do get a sharp pain under the right side but not as much.thanks for your help.