Worst Mom Award--again!

Several weeks ago I was shopping with Makai.  It is so easy to go shopping with just one kid--especially Makai. He is easy going and just goes with the flow.  Well, it was about our third store of the day and he was getting tired so he asked if he could ride in the cart.  He is too big to fit in the front of the cart so he rides in the deep part.   He is always so good and just sits down, but occasionally he will pretend like he is surfing. On this particular day he was pretending to surf when I saw something in the isle that I needed. I grabbed the cart and pulled it back which set him off balance and he fell out of the cart flat on his back.  He looked stunned. I will never forget his face.  After the shock wore off he started to cry.  I held him for about five minutes--I could tell it hurt!  He got a pretty big knot on his head.  Two weeks later I went to cut his hair and to my surprise where the knot was there was no longer hair!  His fall didn't cut his head open, but obviously injured him under his skin.  He has had two hair cuts since the fall and still very little hair.  I have hope his hair will eventually grow back--if not, I am so sorry buddy!  He keeps asking me, "Mom, why do I have a bald spot?  The brothers keep saying I have a bald spot!"  So, once again...I have earned the worst mom award!