My mind has become dislodged

I get lost in an infinite, pointless, circular train of thought and lose track of time and my surroundings.

I’m concerned because I’m usually able to pull myself out of it, but over the past few months haven’t been able to and it’s started to affect my life negatively. Being concerned about punctuality no longer has any effect on me. I have also talked to myself while looking straight at someone and been almost completely unaware of them until later.

My co-workers say I whisper to myself and they can hear my thoughts. They say it’s all nonsense. I also have very heavy auditory hallucinations at night, people screaming, voices.