So recently i've been having the feeling that my brain and me are essentially seperate entities and i need to know if this is any kind of mental disorder
A psychologist would be a better place. The brain and body are separate but connected, basically the body is a series of springs and reflexes. The brain is more complicated with several subsystems, but essentially just a series of electrical pulse travelling a vast network. All things can be manipulated, out of body experiences for instance. Could just be a disconnect with the nerve system, or could be a mind blank, a psychologist would help. Strong ale would be cheaper though.