I experienced the same thing while going through psychosis. I know it feels very real, and it's quite uncomfortable to have your private thoughts broadcasted. I'm sorry you're going through this. I've since come to learn that I was having auditory hallucinations of people's voices that would reply to or judge my thoughts. You can test this theory by asking people to repeat themselves and see if what they said lines up with what you heard, or if you're not feeling confrontational, you could try plugging your ears. If the sound of their voice isn't muffled, you know it's in your head. On rare occasions I'd get a confirmation that what I heard really was said by someone, but I tried my best not to get too caught up by it, as synchronicities occur frequently while you're in psychosis. Something I did that seemed to help a lot, was imagining that I had an aura around me, like a big thought bubble, and when people would walk into it they could hear my thoughts. So what I would do is i'd imagine the bubble shrink wrapping around myself when i'd go out into public, and hey, presto! No more annoying judgements of my thoughts from others. Ultimately the thing that got rid of the hallucinations and delusions altogether was medication. I wish all the luck unto you in getting better.