Pain between eyes

["siddhartha45" <siddhartha45@...>]

Hi to all

When performing the exercice of observance of thoughts, i fell 
suddenly a total unity with my all body and thoughts. All thoughts 
vanish and my body start to vibrate and seems to move slowly. Then i 
can see some pictures like hight mountain that i can change at will. 
But if i tried to maintain the focus on the desired picture, i feel 
a strong sensation of pain between my eyes. What'wrong ? 

Be happy