man when did this forum turn into webmd?
Well it has signs and symptoms of CHF, stroke, Heart attack from the text description, However other things would need to be considered. Factors such as age, weight, habits like drinking and smoking.
It could as well be emphysema or bronchitis if smokings involved.
Given that its been going on for 4 days and youve not turned blue or dropped dead yet, Im guessing its something a little less severe. So perhaps you should look at an inbetween route and locate a local urgent care office. Less expensive than an ER, has longer hours than a doctors office and usually able to handle walkins.
Im no doctor, but I do have a minor background in EMS, to which separating and prioritizing cases was a required skill. Get the best care, as soon as possible, but look at the facts and dont overreact.