I strained my hamstring last baseball season and believe me, if you don' t take care of it correctly it will stay with you for a while. I played through it for about a month because we were fighting for a section championship, and then played summer basketball with it still hurting all the way up until the beginning of the school year. I took all the doctors advice, except I did not rest. Rest up....take Ibuprophin, and stretch as many times as you can during the day. It will only get better if you take the time off to let it heal. Good luck with the injury.