I have had some lung pain for about 5 days now. In fact I am not even sure if it s the lungs or a heart, but its mostly on the left side. It is not so much as pain, but a very strange feeling (left chest) I don t know how to describe it. When I drink water for example, I even feel like it s actually going down on that left chest. Searching on google some people have said it s like butterflies in the stomach feeling, except in the chest, so it mite be that. I am 21, and extremely light occasional smoker (4-5 packets a year since 18) So I really doubt that would be much of a concern. There were some neighbours in the same apartment building we painting, and it just occured to me, maybe that could have been the cause, because of the smell it has been for 2 weeks? I am really not sure. I also havn t been going much outside lately, but I ve just went for a walk today and yestarday. I know that the only thing you probably have for me is to take an ex-ray, but is there anything that you may know that I could have? Thank you.