What I'm trying to say is I think cortisol becomes a real agonizer. It has its own purpose but when it exceeds your brain's limit to handle it, it starts to kill your brain cells which gives physical hurt. It's so slight but still I think your brain tries to numb itself just like your finger when it gets cut. So in stressful situations I think that's what happens instead of supressing your thoughts.

Sorry I can't get it more clear than that. But when you figure out what I'm saying I'm sure it's gonna make sense so please don't ignore this idea and take it to some professional in mental care.