Guinevere, With all this talk of signs I forgot to tell you that I am sorry if he has relapsed. I know how sad and frightening that is. Now is the time for you to make extra meetings and take extra good care of yourself. You know how good addicts are at covering up their use, so I guess the best advice would be for you to trust your gut feeling on this one. You know your son and you know what is normal and what is not. Trusting yourself never seems to fail. Hugs, Marle