Was it a dream or not?

Okay, i woke up and had a headache. I was terribly confused if the thing that happened was a dream or a reality. I could'nt differentiate it. The noise was disturbing my thinking and so i immediately disconnect the phone line, unplugged the radio. I walked to the window, looked out and turned around. Saw my reflection on the mirror. I smiled and it smiled back. I got to go now.