i have been runing for about 2 weeks straight. , and recently like just the other day one of my hamstrings felt really tight , i could take alive to help this one time before , but this time its like a sore hurt. , so i did some running light joging to help get the soreness out.. but its still lingering , what would you guys advice for this ... ive iced it down the other night it helped , for the moment , made my leg limp after though..