i was wondering if someone can please help me by telling me how i can overcome my binges.

over the past year i have lost 3 stone which i kick started with the special k challenge and it worked well for me, i was full up most of the day and exercised too. i'm 5ft 9inch and went from 12 stone 13pounds to 9 stone 10 pounds. my bmi is roughly around 20

at first everyone was great and really supportive but once i got to around 10. and a half stone some of them (mostly the older ones - i'm 19!) changed and started to tell me how ill i looked and that i'd lost too much weight. i never at any point thought i had gone too far as unlike previous diets i was never feeling like my bloody sugar was too low or faint dizzy etc and had more than enough energy to exercise.