Here's where I am:
- No panic attacks, but
- Generalized Anxiety Disorder +
- Depression +
- Odd "episodes" where being overwhelmed with something immobilizes me.
I more-or-less cope with the help of an anti-anxiety medication and by minimizing stress.
As you are feeling tightness in the chest, please try to talk to a doctor as soon as practical - or sooner - about what you are experiencing.
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My dog

mastered the "fetch" command. He would communicate he wanted something, and I would fetch it.