may have done something really really stupid :(

theres a possibiltiy of having a bad drug test...i took meds that werent mine..and then had a drug test and i thought nothing of it :( and i got a call today about bringing in my med history..and i said yes without thinking about it..but the stupid med isnt on my history and now im pretty much screwed and freaking out..wondering what to do about it..and how to fix this..and ugh...gosh ill never take meds that arent mine again..i just wanted to focus :(  god i really need to think through these types of things..ugh... :(  upset and feeling really stupid..