I really need help and answers about my high ankle sprain....?

back in january i rolled my right ankle inwards and just left it til in april i went to the doctors( just my family doctor) because it really started to hurt and he told me it was a high ankle sprain and told me to go buy an air-cast brace thing and if it still hurts in a month to come back well it was still hurting and was getting weaker and so i went back in may. i never used crutches and still ain't using them. when i walk i walk with a limp. i got an x ray and nothing it broken or fractured. but now it still weak and is still painful. it's still black and blue, swollen and a little red. the pain started out on the outside of my ankle and now it's behind in my Achilles area and the inner part of my ankle and the top part of it. do you think i did more damage to it? oh and saturday i was walking with my friends and i didn't see that there was a hole in the ground because of the gr and my bad ankle fell in and i rolled or twisted it again...but that just made the pain before hurt worse. what should i do? my mom said she gonna wait til i'm outta school to make another dr. appointment that way i don't have to worry about going to school with crutches or anything like that. i end school in 6 days. also i'm 15 and very active. what should i do? what kind of damage do you think i did? how do i know if i hurt my Achilles tendon?