An unforgettable experience-revised

I went through an unforgettable experience while I was merely a freshman. One day, I went to the bus stop to wait for the bus after school. Instead of going back home, I went shopping in a department store for some daily necessities first. After buying all the supplies, I went to the bus station and got on the bus which could pass by my home. The sky gradually grew dark. I tried to take my cell phone out from my pocket. Suddenly, I found that I couldn't find it at all. My cell phone was lost! I lost my head and didn't know how to deal with the problem on the bus. The only thing I could do was to get home as soon as possible and ask my family for help. After knowing the bad news, Mom dialed the bus telephone service. Foutunately, there was a student picked up my cell phone from the bus which I took from my school. I contacted with her without delaying and expressed my great gratitude to her. From this unforgettable experience, I have learned a lesson that I should take care of everything with care every time.