i dont know how long you have been smoking weed so i dont know how much you know, but sometimes a bong can take around 10 minutes to fully kick ibn, also go watch a movie/play a game to take your mind off it, if you concentrating thinking "am i high yet? am i high yet?" your not likely to have a good high, go do something then it should hit you, atleast it does with me! pretty stronglyu too ripping a bong by my bed once playing GTA was pretty hard to get out of bed! lol