dilated pupils

sorry i didn't post this earlier...well anyways...tommorow i will be going to the clinic and the'll be drawing blood...but its not for marijuana...i think they're going to test my blood just to see if i have any problems because my grandma had TB (tuberciolosis...sp?) and it's required that we get a test to see if we (the people living with my grandma) are negative or positive for the disease...me and my mom got tested negative...and today my mom (a toker but doesn't know i toke) had to go for a check up and they drew blood from her but i don't know exactly what they're looking for...i'm pretty shure it's not drugs...i didn't know they were gonna draw blood and i just toked up for the past week...i'm pretty shure it's gonna show up that i have THC in my blood...so my question is are they going to say anything to my parents (who toke up too but don't know i do) that i have THC in my blood?

P.S. sorry for being unorganized