...accompanied by sweating. help? i'm 17 female. as mentioned, i've been having shortness of breath. most of the time, and i have to take deep breaths almost all the time. When this happens, i often get cold sweat and i sometimes find my heart doing heavy beats. sometimes even slowing down or so to say, experiencing a 'lag' (like in a computer); almost like jumping or skipping a beat and it feels like there's something stuck in your chest (like when you eat and the food doesn't completely come down). should i be worried? if yes, then what is this?