Ihave been having headaches since august 2009, that headache lasted 11 weeks , the dr sent me for an mri , which came back clear , since then i have been getting regular headaches lasting anything from 2 - 3 weeks at a time , with this i also have severe pain in the bottom of my back and my legs sometimes so bad that i cannot walk , the doctors not really listening , i just wonder if anyone else has had this , thx