MY ANKLE HURTS WHEN I BEGIN TO RUN & IT FEELS LIKE ITS GOING TO GIVE OUT ON ME ; B/C I RUN TRACK.?

I run track & this is my 1st yr. & they have put me on sprinter. every time i try to take off running my ankle starts hurting & slowing me down. It's feels like my ankles are going to give out on me while im running or something. Its seems like they need to crack or pop or something. . .but idk ! does anyone have any suggestions PLEASEE I COULD REALLY USE ANY SUGGESTIONS !!