Would I know if my doctor ordered a drug test with my blood work?

My mom took me to the doctor earlier because i'm 20 days late for my period & she wanted them to make sure everything was okay. (I'm not pregnant) However, all the doctor did was ask me a few questions, write me a slip & sent me to a lab to get bloodwork. I ate a pot brownie exactly 2 weeks ago for the first time ever & I wanted to know if that would show up in my bloodwork. I don't think my mom asked for a drug test, & the sheet said she was testing me for CBC blood counts, Hormone levels, anemia, pregnancy, Thyroid stuff, and THS. I'm worried that it might come up please help !