Do i have ADHD??????????????

i cannot seem to import data(concentrate),i can appear "focused"but i dont seem to be having the cognitive processes as others, i cnnot seem to have a lenghty conversation on one topic,was in a lot of trouble as a youngster,am 29 now i go to the gym 5 days and bodybuild,115kg!i can "thrash about in a gym" seem to be unable to get a job and want a pension, as all social contact seems to be tarnished,with either my aggressive "demeaner" or lack of patience to listen to peoples "crap" when its obviously "inferior to "my busy mind" and the hurried manner in which my "mono type thoughts" seem to race,or grip me with,i do meditate,when i take a tiny amount of marijuana,its sedative effects allow me to "come down"to earth,this problem is my utmost concern its effecting all my life!,please reply super thinkers and feelers,i need an answer on this,i ve been diagnosed once with "clinical"depression, and once with bipolar,i ofcourse feel tey are a little too "fundamental" and obtuse xoxo phill