Very Paranoid. Please advise on hair test.

The last time I smoked was 7/4/10 and 7/5/10. Even then I only took a few drags off of a one hitter each time.About a month prior to that I took two hits from a pipe. I have no idea what kind of weed it was either time. It had been years since I smoked prior to this. Maybe 4 or 5 years. I haven't smoked a single time since those occasions that were almost a year ago but have been around people smoking once in a garage breifly. I could smell it faintly but not very strongly or for very long. I had to take a Phsycmedics hair test on Monday 6/6/11 for pre-employment. My head hair was too short so they took hair off both arm pits. I have never shaved my arm pits either. Am I in the clear or am I being super paranoid? This job means so much to me. Please advise. I am so nervous because I've read that the body hair can trace back about 18 months or so.

By the way, I am about 5'9" and 130 lbs and they took maybe roughly an inch of underarm hair.

i last smoked a thin thin blunt of purple kush with a friend before he moved. less than a half of a gram was in the blunt. well me and my girlfriend and my friend, so three of us. I hadnt smoked in over a year atleast. this was on like april 30th, 2011. had to do a HAIR-5 for quest diagnostics yesterday, of course they took it from the arm pit. pre-employment drug screen. any ideas on how this may turn out for me?