Please correct my mistakes.

Sad story

It was the second day of rain. I was an elementary school student and I was probably 9 years old at the time. I played with my friends at the park near my house. We were members of the same soccer team, so we tried to play soccer. However, the condition of the ground was too wet due to the rain from the previous day to play soccer, so we decided to play on the swings in the park. This was the start of a tragedy because how we played was that we pumped our leg on a swing and jumped down from the swing; which was somewhat dangerous for us young children. In addition to the danger, the swing got wet with the rain and I tried to jump down backward. The result was that I broke both my wrists and I hit my head hard on the ground. I still remember that it gave me quite a headache and made me very irritated.
After playing a little bit more, I decided to go home on my bicycle. However, there was no one at home at the time, so I decided to sleep until someone come back home. About two hours later, my grandmother come back and I told her what happened at the park, but Grandma cannot drive. Fortunately, my childhood friend’s grandmother had a car and drove me to a nearby hospital. I was very surprised when I was told by a doctor that  both of my wrists were broken. The situation produced a huge inconvenience. However, there is one good thing about having broken wrists; someone else took notes for me in class.