Welcome psyclox to psychcentral. Have you been diagnosed with any particular mental health issue? Since you posted in this forum, I'm guessing you at least suspect something. Are you taking any medication? You don't have to answer any question; I pose some things so you can take them into consideration.
Do you hear this all the time, or is it louder at some times than others? Since you are posting this so well, I'm hoping you realize that noone is out to get you, especially those who care about you, right?
Again welcome... come back and share how much you wish to...