i’ve just turned 19. ive had bad health anxiety, and just anxiety in general for a long time.
since last night i’ve been having some issues. it sorta came on suddenly? but i was also worried about my heart then and i started to experience chest tightness and shallow breath. 
now today, basically the same thing but i keep having this sensation in my chest, around my heart, and i’ll feel it in my throat too. once i take a full deep breath and breathe out, it appears then. the middle of my chest/heart area feels sunken in too? the best i can describe it. i’ll have shortness of breath as well.
it triggers me to cough sometimes and when i do it, goes away.


it isn’t a constant thing, it only usually happens when i breath in fully, sometimes when i talk or just randomly.

it’s almost 12 at night, im just scared. 
if tomorrow i feel the same, i’ll go to urgent care, but in the meantime, im just hoping someone can relate. 

i’ve had this sensation in the past before, including sharp chest pains and palpitations. last summer i did multiple ekgs, an ultrasound, listened to my heart many many times, doctors didn’t seem concerned. i brought up the “triggers me to cough” thingy too. 
i’m just worried they missed something