It does appear to be that you might be suffering from obsessive compulsive disorder or something on that spectrum, but only a professional qualified mental health practicioner can give you a honest correct opinion.
These voices in your head, do you hear them - as if you would hear another person talking to you like sound - rather than the internal monologue we all have which is more of a 'thinking' sound than a 'hearing' sound.
If you're 'hearing' it, and it seems as if its like a voice of someone in the room - it definatly would be a very very good idea for you to see a doctor as soon as you can as that would indicate the possibility of a psychotic disorder such as bipolar mania or schizophrenia.
If anyone wants immediate advice don\'t hestitate to contact to me on AIM (AOL instant messenger) - aim: vodkasmodka
Eccentric! Not egocentric!