After interview in walgreens?

hi im kinda paranoid, i was interviewed last march 11, 2011 in walgreen;s, by the store manager. the interview went well, and he explains that there are many job seekers that would undergo the interview. and he told me that he would call me for the drug test steps. i really need this job. and im getting kinda depressed, what should i do? the staff told me that he went on a vacation for two weeks, after my interview. help! thanks.