Hi i am having a terrible day my chest is so tight i feel like i cant breath properly ,its like i feel im going to suffocate .Its also a feeling like i have a chest infection but i dont if that makes sense .My doc says my chest is clear and my oxygen is 99% .My peak flow which my doc gave me years ago to check i didnt have asthma is 440 all the time.My doc says it is my hyperventillition syndrome thats causing this because of my anxiety .Its so scary ,i cant stand it.I just find it hard to beleive this is not bad for my health .Can anyone reasure me that they also have these symptoms than you kind regards molly xx