Hey there everyone. I've been having a weird sensation as of recently where whenever I see the DMs of a group of people I used to talk to, my heartbeat gets harder and faster, and I become shaky after it calms down. Honestly if I had to describe this feeling, it is almost like my fight or flight gets triggered. This group were some friends that I had a falling out with, and from what I remember things didn't go well. What is happening with this? Is this normal or am I overreacting?