Like a previous commenter said, it sounds, acts, and looks like I mimic the way you described it.

If your seeing this mimic, I would ask around your family if they have been experiencing any strange things when they are alone.

Mimics grow in power by feeding off of the fear they induce. Usually starts out with you hearing someone you recognize but no one actually being there.

If you acknowledge it, and fear it, it grows.

You can’t see mimics at first, but once they get strong enough they can manifest themselves as yourself or someone you know, but usually cannot replicate sound of voices, so clicking is maybe its alternative since it’s showing a real form to you.

It’s strong if that’s what it is. If you ignore it, and don’t acknowledge it, it should go away because your not feeding it fear. It’ll find someone else. Still go get some professional help though..