A regular mirror should not make you look too much different from your true self. There are mirrors that enhance and some that decrease. Look at your body. Have you had to buy larger sized clothes? Every morning when you get up weigh yourself and use that as a judge. And please clear your mind. Whether you are unsatisfied with your weight and size can only be changed when you have a clear mind. Sometimes water can collect in our tissues and make us weight more or look heavier. Should you decide to go on a particular diet other than limiting unhealthy foods, consult a nutrition.
I really think you need to ask your parents or counselor for help. I believe these are signs of an eating disorder. Please don't think I'm criticizing you. I have battled with anorexia and know the symptoms. Let me know how you are doing? I'm going to ask you for a friendship request. Please rate this answer. I will be here for you if you need to just talk.
The slightest bend in a mirror can distort your image. "Really it's just a piece of glass with a reflection on the back so if the glass is bent in any way, shape or fashion," Bowie says. "If you make it bend this way, the light would hit the mirror and go off in an angle so it would make you look larger. A bend in the opposite direction will make you look slimmer.
Well mirrors do make you look fatter cause they cave this thing to make you look fatter I don't think your fat but to weighing more den 120 is fat