You and Glenn where out trying to lead walkers away, when Nickolas shot you by 'accident'.

Glenn heard the gun shot and ran over to you, who was left to die. Your lower right side of your stomach was bleeding badly, your breathing was heavy and uneasy as you begged it to stop.

"Come on, come on." He said helping you sit up, "I know baby, I know, I know, I know, I know!" He grabbed his walkie talkie while holding your head in his lap as he panicked, "Rick help me!" He shouted down the radio.