How Can muscle Soreness In The Leg Be Treated?

I’m a male second year University student and am on the University football team and feels Iike I Have to put in extra workouts to be able to compete with the other football players. Lately I have noticed a drop in my performance, I have muscle soreness in my legs, and am always feeling tired, and have a loss of appetite. As a result, I works out even harder to try to work through this low point. I maintain a healthy diet and doesn’t use performance enhancing steroids or weight lifting supplements, but still am required to do random blood tests as part of the football teams drug testing policy. I have a high HDL (high density lipoprotein) and BUN (blood urea nitrogen) level as my last blood test results say, but I don’t know what is wrong with me