I have a question. if someone were having a very strange sensation in their chest, behind the sternum where the heart would be....the sensation feels like blood gushing through. it s just to weird to describe very well. no pain. no shortness of breath, no lightheadedness.... but the beat of the heart feels a little bit off, like it s missing and this gushy feeling almost like when you have chest congestion but in the heart instead. weird I know. not sure what to do. it s probably nothing, but thought I would ask. lasts only about a minute or less. but comes back. does anybody know what this might be? Thank you