bb.......

There is a common struggle we have due to PCS. It is an extremely exaggerated startle response. This can cause all of the PCS symptoms to spike very quickly. It is an anxiety response, not a physical damage/injury issue.

The explosion that causes a concussive blow if far more than the most powerful fireworks. It would have blown you off your feet. Think of what a stick of dynamite would do.

So, try to regain your relaxed state.

My best to you.