hi, my name is katie and i had i similar problen when i was about your age...i had highlights and decided to touch them up myself when the roots were getting to show up, i bought do-it-yourself blode dye and started to dye, i ended up doin my whole head, and that was a big mistake. i had to be somewhere right after so i washed my hair and went out of the house, not relizing my hair had turned orange, i tried dying it blonde, it still turned orange, i tried going to a slone and gettingit professionally died back to my natural color but nothing seemed to work, i think your best shot is to just let it grow out, thats what i did and even thought it took a while, i now have my natural color back and, can dye it again. I dont plan on getting highlights for a while though, i am sporting vibrant fuscha pink tips...i am 15 now and regret ever trying to dye my hair myself!