Overload at work: listener question

I am a nurse in an intensive care unit in a big hospital. Several colleagues have been signed off work with stress. There are not enough of us on the ward but recruitment isn’t happening. The pressure is immense. I am so tired. I am starting to make silly errors that I would not normally ever make. I am worried I will cause harm. I am getting more and more frustrated and resentful about being put in this position. How can a conversation about reality help this? Please don’t tell me this is just my thinking.