Curious to know the feelings you're having. I've also had a battery of tests run...including CT scan and have, as of the last week or so, been experiencing odd feelings on the left side of my head. It's like a cold dull pain on the left side....and sometimes I get a burning/tingling sensation on the back left bottom portion of my head. Feels like these symptoms come and go with every breath I take. I researched pics of rhe brain and there is a fissure that runs down the middle of rhe left side of your brain that becomes activated when the brain is 'anticipating pain.' Perhaps this is what's happening?