For the past two weeks I keep getting these episodes of a tight chest, it feels like I can't breathe properly and I have to really concentrate on getting it back to normal. Sometimes there is an actual pain with the tight chest, other times it's just difficult to breathe! I've had two chest x Ray's, 2 ecgs and blood tests all done in the past. So is there much point going to the doctors again about all this?! I get really bad lightheadness too! Can anyone relate?