For the past two weeks, at least once a day, I have brief periods (20 min to an hour) of time where I feel I cannot take a whole breath. This has happened to me very ocassionally throughout my life, but has happened a lot lately. My chest feels a little tight when this happens and I feel like I just can't get enough air. Also, it gets harder to swallow. I thought maybe it has to do with an increase in humidity here, but it has cooled down again and is not so humid but it is still happening.
I don't know what this could be--I have heard about this happening during panic attacks, but this happens out of the blue and does not seem to be related to the situation I am in. Once it starts though, I do sometimes feel a little panicky.
I am 22 years old and in fairly good health, even though I am overweight. I know I should go to the doctor, but I do not have the money to do it (even though I have insurance I still have to pay for part) because I know they will run a bunch of expensive tests. Does anyone have any ideas what this could be? Should I be really worried? I'd appreciate anyone's help. Thank you very much in advance.