A painful experience

Hello :>
Today I'll write about a painful experience.

When I was a high school student, I belonded to a tennis club.
I like playing tennis very much.
One day, I have a marathon as an event of my school.
I ran about 6 kilometer!!
After that my leg hurt, and I thought it gets well soon and didn't go to hospital.
Though it didn't get well and became worse.
I went to hospital and there was a stress fracture in my leg.
A doctor told me to stop playing tennis for 3 weeks.
After 3 weeks, I went to hospital again.
But the doctor told me to continue stopping tennis for 2 weeks.
So I couldn't play tennis for over one month :<
That was my painful experience and the first time I broke my leg.