Okay well I gave blood about 3 days ago, and ever since my heart (pretty sure.. I guess it could be my lungs)[would help if I knew more about this kind of stuff] hurts. Like its not constant or anything only when I pick up heavy things, sneeze or cough hard etc. And I'm wondering if its something serious. And I don't have heath insurance so I figured any help could be good. I tried thinking logically and I know I almost passed out when giving blood, and I don't eat as much as I should so maybe my heart had to work extra hard to produce enough blood? But it should have stopped hurting by know. Im not sure, sorry for the really long post. But any idea's would be helpful.Thanks.