I used to experience this a lot. I had EMDR & am in the process of having more. It helped a lot, but if I’m around anyone now that raises their voice or I sense a negative tone, I experience the same as you still (but not as severe) I too have PTSD & CSA. Talking therapy has also helped with coping strategies & im 4 yrs into that. You can get help with this, I promise. It’s ‘manageable’ for me now, which is a hell of a lot better than it was. Good luck.