if its your normal 10 panel p-test, you should be alright, although pot can stick around for quite a while depending on how much you use, anything eles comes out pretty quick
it also depends on how they took the sample, hair sample can last up to a year depending on the drugs you used, urine you probably will be OK.
You need to give more infor about the med or meds you were taking to get an honest answer. The name or names and the length of use.
fengirl09