its really normal especially if your older and just start smoking,its no biggie really.if u had smoke pot laced with anything it would have been pcp and u would not of wanted to go to sleep.u would have noticed any other drug on your weed.heres what i would do if u do continue to smoke.toke up by your self maybe smoke half a bowl, cook some dinner and watch t.v listen to the radio etc.i have done a lot of drugs and i can honestly say that if u hype something up to the point were your nervous about doing it .A u shouldnt be doing it and B.u will have a terrible time with your experience.anything that can change your experience on life with no effort is a gift and should not be abused.pot is the one thing u can learn to love and enjoy,just take it slow and love the bennefits it brings.