I'm surprised my mother didnt tie me to a chair (xo)

I am about 4 years old and we are travelling with my Grandfather and my mum to a cottage in Peterborough in August for our summer vacation. I don't remember whether my dad was working and would meet us later or what but I know that hes not with us during this trip..Mum is pregnant..due in December...
I remember being the pest who always wanted to do what my brother and sister could do..so naturally I would tag along to wherever David and Cathy were..and they would makeup games or explore the surrounding area of the cottage to see what interesting things they could do or find..
We weren't there very long when David came upon a cement mixer on a two wheeled cart.. and being the adventurous one decided to climb on the one end and run to the top and leap off ....I remember watching a few times as he would run to the edge of the cart and spring forward like he could fly..I remember thinking.."Thats very cool... I want to do that..I am small but I can do that!!"..I remember climbing up on the one end of the cart..feeling proud of myself for getting up on it without the aid of anyone else...and then "all I have to do now", I thought,"is run and jump forward and I will do this ..just like Dave!!"..hmmm..Yeah, so much for that idea.. the cart shifted as my clumsy little body ran to the top and instead of leaping forward- like in my imagination- I tripped at the edge and fell immediately to the ground. The cart dipped forward and I was frozen as the cement mixer ( which to me was moving in slow motion ) dropped on top of me.. why didnt I move? why didnt I try to roll away so it would miss me? I dont really know. I heard my brothers screams piercing the air.. my grandfather running towards me.. the next thing I remember is him moving the mixer off me and being held in his gigantic arms.."Im really tired" was the last thing I said to my grandpa and then I was told I passed out... What unfolded afterwards was a nightmare to my pregnant mother.. she said that they took me to a local doctor who informed my mum of the worst..that my bowels were crushed and that I may not make it..and after that my uncle Jack who drove for St.Johns Ambulance was contactedto pick me up and I was rushed to Peterborough Hospital where they thankfully didnt have the same conclusion and after being exrayed found that I had a cracked hip..and would have to be immobilized while it mended..I dont remember how much time passed later but I was transferred to London's St Joseph's Hospital (where I would spend the next 2 months with my leg straight up in an elastoplast bandage and being turned over every morning and night till I healed.
that's me-------->-