Are you just bleeding?
Or bleeding to death?
If you are bleeding to death, at some point as blood volume decreases, a physiological mechanism in the aortic arch detects the loss and responds by increasing heart rate. Increased heart rate and falling BP is a sign and symptom of a internal bleed.
Trying to keep calm is good. But at sometime physiology takes over.
When I was a volunteer firefighter/EMT, be nice if everyone was calm and not screaming. But that is not reality.
