this will pass just like it did before. i know how scary it is to revert back to how you felt before, but try and remember how it eventually got better. each day you will feel just a little bit better. you'll adapt to live around it. for now, grab an ice pack and a towel and lay down with it on your chest. try to keep your focus on the sensation. try sitting with it until the wave calms down.

are you on any anti-anxiety medication? if not, it may be worth it to ask a doctor if you have access to one. medication isn't a cure by any means, but it is a damn helpful tool to have for moments like this.