I had suspicion that my 20 yr old son was using. Until about 2 months ago, he was in first year college, was doing fine, was going to the gym every day, eating healthy...All that changed suddenly. He would stay in the basement, playing games when not in school, my basement looks like a dumpster, dirty dishes, clothes everywhere. I keep telling him to clean, he keeps telling me that yes, in about 1/2 hour, and it's not done, it keeps getting worst, no more going to the gym, he would avoid talking to us, became very withdrawn. Got a call from a college teacher who was looking for him (he had left that morning for school), telling me that lately, he's missed several school project and missing a lot of classes. I asked him about a month ago if he had started using again and he said no. Yesterday, he came home for a minute to grab something and I smelled it on him, really strong smell. Now I've cried a lot since, I am so scared about the future will be for him. I don't know where to turn. He is very confrontational. I would do anything to help him.