TweetU'll be okay, it's because usually prop has a high BA contant and that's why u get a red sorenesss spot on it. It should go away in a few days just massage it and keep an eye on it. If it gets really red and really sore to touch, if u see a red streak line running down ur shoulder than go hit up a doctor, but I wouldnt worry about it -- it should go away, just keep an eye on it.