SABC- all of the above
All of the Above (Coughing up blood, Sucking or hissing sounds coming from a chest wound, frothy blood appearing from air bubbles coming from the wound)Also it hurts, prolly.
pain, blood coming from the chest,
Well, it would be pretty noticeable with a visual examination. If it punctures a lung it may make a sucking noise and the wound would look frothy.
Um, a gaping hole in you?