Okay so last september i started highschool, i'm 15, 5'4 & i don't think it was ever the pressure to be skinny or anything but it was just that i felt i could lose a few pounds, but i guess i just got so caught up that i started not eating nearly enough. Well last time i had my period was probably September or October and i believe it's cause of the weight i lost. i was around 120, and i went down to about 103, gross i know. But now i don't care & i eat really healthy but i eat every meal and snack a lot. but i don't understand why i'm not getting my period now that i'm eating regular again?