i just started shooting my quads recently and the first couple of times ive had no problem but now for the past like 6 times i stick the needle in i get in a little bit or about half way and it hurts and makes my leg flex like twitch so i just pull out and move and still have the problem. WHen it happens i could probally kill someone i get so mad. but when i shoot i sit down. do you think i should just try standing or just quit shooting my quads ? i dont know what to do