How To Cure Severe Thigh Pain?

hello, about three weeks ago I did the splits and heard clicks in the back of my thigh, resulting in intense pain and fuzzy sensation. since then when I try to do the splits it's been extremely painful and I can't do them and I get a really painful sensation in the upper part of my thigh and the lower part of my bum, i can't get to the ground anymore. since then I have tried to splits many times and can't do it. I was wondering what I've done to my leg and how long it will take my leg to heal? because I have at gymnastics exam extremely soon