For years I have felt like I am stoned but I dont smoke, about 3 years ago I had carbon monoxide poisoning and ever since have been extremly tired and have had difficulty doing anything, about a yr ago it started getting worse and 5 months ago I started having sever confussion, memory loss, difficulty thinking of anything, near black out upon standing and walking after a min.  The confussion is gone but I am so tired all the time, I am having the near black outs so many times a day I cannot count, I cannot think at all, my words get all messed up, words that I know I just cant think of.  I have had all sorts of test but they just say they will have to wait and watch.
Degree understand your concerns went through your details. I suggest you not to worry much. Ou have nothing to worry. All these symptoms are associated with anxiety. Carbon Monoxide poison happened 3 years ago. These symptom has nothing to do with that poisoning. In fact, people across high density cities wade through carbon monoxide poisoning every day. Carbon Monoxide do not have such effects (like you have now). It is clearly of anxiety. You are imagining the symptoms because you fear that they may be real. Consult a psychologist. Soon. If you require more of my help in this aspect, Please post a direct question to me in this website. Make sure that you include every minute details possible. I shall prescribe the needed psychotherapy techniques which should help you cure your condition further. Hope this answers your query. Available for further clarifications. Good luck.