Hi, I Am A Teenager With ADD And I've Been

hi, I am a teenager with ADD and I've been taking vyvanse for three years now. it's always surpressed my hunger, and it's the reason I'm thin. In the past few years I've also developed really weird eating habits. it takes me a really long time to eat. I take a bite and I chew and chew and chew forever I don't even know why. I have to force myself to eat and sometimes it's super hard. I have low self esteem and I like that I'm on the thinner side, but sometimes I see other girls and wish I was a little skinnier. my moms a doctor and she accuses me of having an eating disorder. I'm worried about my health but I'm not sure if it's an eating disorder or not? also I'm 5"8 and 125 pounds not sure if that's bad or not.