If i give blood at a blood drive and i smoked marijuana like a week ago and got drunk two days ago?

so i smoked pot like a week ago i know i know its stupid and i haven't done it in awhile but i did hate it and i'm not planning on doing it again. so my mom was saying how i could go give blood at a blood drive today but i smoked a week ago and got drunk two days ago. would they check my blood and find stuff in it. im not a regular drinker or smoker! and all rude responses will be reported.