Help with leg injury!! 10 PNT best answer. need answer asap! Doctors/nurses would be appreciated?

soo for the last two days in gym class ( we are playing soccer ) we also never warm up in the beginning.. whenever i would go to kick a ball ( i play hard ) i would get this pain in my kicking leg, at the quadricep. I didnt let it bother me and played through the minor pain. Today in gym class it was going fine.. i went too shoot a goal and kicked the ball with my toe very powerfully and it felt like my quadricep got ripped off. It hurt in the middle of my quadricep. In between the kneecap and my hip. I had this burning pulling stingiing sensation. i could barly walk with my foot.. I am not a wimp soo i played through the pain and when people would pass it too me i wouldtry again to kick it. Itcontinued the stinging pulling sensation everytime i would kick it... after a coulple times of me kicking the ball i couldnt bare the paiin and stood there not telling anyone i was hurt. When i stopped playing the pain shot down all the way down the side of my knee. it has been hurting ever since that.. which was prob around 9 this morning.. also when i am sitting i can not lift my quadriceps up it kills. I have cheerleading tryouts starting monday..helpme out!