Hi i think i have a chest infection but im not sure. i have a green mucas sometimes clear and my chest feels heavy, my heart also flutters any ideas?

Infection likely.: Green phlegm implies infection. It could occur from a sinus infection associated with a postnasal drip, infection of the throat, trachea, bronchi or lungs. It is often associated with some elevation of ones temperature. When associated with palpitations, it's best to hydrate oneself and see ones doctor for diagnosis and proper treatment.