For short my health anxiety has been the worst over the past month because of a swollen lymph node that showed up after bad acne, I had one panic attack after the other almost every day, my appetite was horrible mainly because of the fact the attacks triggered my GERD and shortness of breath. 

Eventually I got treated for my GERD, appetite came back and I'm feeling better than when it started but I'm still assuming that I'm tense. My shortness of breath feels like the sensation you get after you cry, it feels better when I'm distracted (i.e. Falling asleep, doing anything that requires full focus) which is my most worrying symptom. I always yawn and hyperventilate. 

I'm wondering if anyone who has experienced this found a way to lessen the severity of feeling tense and if anxiety symptoms can last for a while.