I always feel overweight, even though i'm actually too thin...
Is this normal? My BMI is 15.5, making me underweight, but I always feel like I am too big. Sometimes I look at magazines with friends and point to a model saying I'd like to be as thin as they are. Then my friends tell me I am already much thinner than that person, I don't believe them, then we look up that person on google and find that my friends were right. But in a few days, I start to feel like I should be losing weight.
I eat the same as the rest of my family, all of whom are on the higher end of normal weight. I don't take any drugs or medication at all and rarely exercise, and I'm sure I don't have any condition that would cause this. Is this normal?