How to feel in this situation?

My guy got hurt today at the mill. It wasn't super bad, he told me it could have been worse and that a sharp pipe could've went in his chest. His knee is swollen and it a bit scared, and he is rested throughout the work. He was explaining it to me today. And, I was getting a little emotional inside, thinking "aw, my baby got hurt." This is a long distance relationship, so I am not there to be by his side when he gets hurt. He asked me why am I so quite, say something and I said "I have to drop my nieces off to my mum." It seemed he got mad and quickly said bye and hung up. I feel more terrible. I was giggling thinking he got mad at me, because he never does and then I started to think how bout if that sharp piece of object would have gone through his chest? I started to get teary eyed, because I care for him deeply. And, that littler scratch got me thinking about other bad stuff. Bottom line, I am happy that he is okay, but supposedly he is limping everywhere and isn't replying to my messages. But, at the moment I think he probably got mad and went to go play golfing to let his steam out. I don't know what do you guys think?