I am not sure what is irrational. Symptoms are up and down. If they are down, we tend to think about what we did the day before (loud music, tiny bump,...) and learn.

I agree with you on the anxiety level though, ideally one should be less anxious. But when your whole life 'as you know it' is at risk, you try to take zero risks as much as possible.

Thanks for everyone's inputs. I have been off work now for 2 months, after that flight. Last year I also took 2 months after a flight. I haven't seen many PCS cases with such a sensitivity to flying.