It is easy to think
“This time is different, its something serious” or “thats a new symptom,its not anxiety this time”. Your body/mind is good at tricking you into having another anxiety attack. It seems to get used to your ways of countering it and comes up with something new.
So true.
What's the weirdest panic attack symptom you have ever witnessed? 
Anxiety is not to be underestimated. 
i have other people saying this not anxiety it has to be something wrong causing all this now im worried and thinking about it.
Anxiety....hope this helps
