Intrusive and rapid thoughts

I've been having more and more intrusive and rapid thoughts to the point where I have to tell myself to shut up... in my mind.

The thoughts in my head have rapidly different tones, and they argue with each other. And I have to tell them to stop or else they won't stop. The biggest problem is that because I hear different tones of thought, my mood is very erratic.
These intrusive thoughts will trigger different moods and it will cycle through the entire day.

It usually happens when I'm alone, but they leak out at different times even when I'm not.

I have cycles where certain "tones" are more present than others and it makes me feel like I'm a different person each day or each week.

It's hard to explain some things but it's making me very confused and depressed.

I have been to the hospital for having a severe (life-threatening) panic attack.

It's making me worried because I'm getting delusional thoughts too.
I went outside at 2:30am to go for a walk to clear my mind.
Something was very eerie about the night and I was convinced that the cloud formations I saw in the sky were signs from aliens telling me to drive to the beach so they could abduct me. I convinced myself this.

I get paranoid (feeling I'm being watched) almost every night or so.
I always feel socially alienated by friends and strangers.

I used to hear screaming that wasn't really there.
And I just heard a voice that evidentally wasn't really there about ten minutes ago.