Distress

Numb, didn't know the meaning of the word until now.
Distress, agony, hurt, pain, all of the above...
I'd seen other people feel this way.
Acted like I knew what they were going through.
But I didn't... I'd never been through anything like that.
Now I'm lost. I don't know what I'm supposed to do.
How do you go on, knowing you caused somebody so much pain?
It's unbearable.