Do I deserve this for doing something not bad?

I went to the nearest end to go to the recycling bin to empty my garbage. It was almost full and I was thinking if I can put the papers and cardboard on top which won't be a big deal at all. Then as I put the things on top. A teacher her name is Ms. Delucia who helped me so much on student council yelled at me. I wanted to cry but I kept my feelings inside. She is like yelling with most classroom doors open and other teachers could hear. I have a habit thinking of a mean teacher and the most nicest teacher I known come and yell at the mean teacher for me. and so she said how its full, and the custodian can empty it out tomorrow. As she was yelling at me my friend came outside and saw not saying a word with a suprised face and went back to my classroom. She said are you guys using common sense!!!!!. I dont know what to do. It is still in my head, I am a innocent student and sensitive.