Suggest Treatment For Sprained Ankle

hi, I SPRAINED MY ANKLE yesterday ! in school cuz i jumped and then i twisted it. i already went to the doctor and they did x-ray the said that is not broken is just sprained... well the doctor told me to put it on ice for 15 minutes and to eat motrin.. but im eatin tylenol.. well my ankle is elevated and everytime i need to stand up to go to the batrhoom or etc and i use crutches everytime i stand up it starts hurting mee why?!