"Shells fell right next to us"

I would like to begin my story with the fact that my mum and dad went to clean the garden. Then a strong shelling attack began.   

We rushed into the pit. Dad covered me with his body. I was very scared, as the shells fell right next to us. As we lay in the pit, fragments fell on the trees. I have stuttered very much ever since. I feel very bad when my friends laugh at this.