It doesn't matter now, since you can't find out if it was laced or not anymore. One time use even if it was laced is unlikely to cause any permanent changes in your brain function anyway, but what it can do is cause you to begin conditioned thinking that mushrooms over time. Think of it kind of like PTSD. So you have to learn to not think in this conditioned fashion, which is easy to say but not easy to do. Hope you find a good therapist who can help you do this.