Hello, I'm a freshmen in highschool and this is my first year ever running track.. My coaches say I am good. My 800 time is 2:27 and my 400 time is 62. but I recently have a lower back pain, and I guess a deep butt pain. It hurts when I try to make a stride or try running. I have champs coming up next week to! so I cant really rest! But It hurts pretty bad , but only when I go to run I walk and jog with no pain? PLEASE HELP!!!!!!!