Hi Milanchz welcome to Neuro talk this is a great group of people.Please don't beat yourself up about smoking pot it happened and you are 18 maybe lay of the stuff and see how you feel. A brain injury can take time to heal give yourself that time and look after yourself. I always worry about fertilizer and stuff they may use on the plant if your not getting it by prescription , and that is hard to get. Your are so young and have so much to learn be your own best friend, most of us over 30 have tried it even if we say we didn't lol