Increased appitite and thrist with weight loss?

well lately ive been eating alot more then usual (when the usual is pigging out to a point its creppy) and i cant seem to get full no matter how hard i try and its really ****in annoying. Along with it ive been thirstier then normal and every now and then my vision gets so stupid and starts like blurring (i already wear gles and i got my eyes checked out about a month ago so its nothing like that) and i've lost weight... which is kinda bad considering i'm only 94 lbs now and i'm 5"3. Can anyone help me out here and know what is is? :) apprciate everything! lol and dont say go to the doctor because my parents arent gonna take me when i had my last checkup at the begginning of the school year when i wouldnt even see one when i jacked up my wrist and nearly broke my pinkie finger.