Am I here?

I walk into class. No one says anything to me. No one looks at me. Not even the teacher. I’m tired. Extremely tired. I end up falling asleep in class. I wake up when the bell rings. The teacher didn’t see me fall asleep? Why didn’t she say anything? I brush it off and leave. I was scared that if I say anything that I will get in trouble. That was the last thing I wanted. To get yelled at more at home. I don’t even know what I’m getting yelled at for now. I don’t even do anything. I say nothing. I don’t eat anything. Wait… What if it’s because I'm not here? Maybe she didn’t say anything because I'm not here. Normally, when I walk in the classroom someone says something about how I look or act. But no one did. So tell me… Am I here?