DRUG TEST

im 14 years old and about 100lbs. (if that has anything to do with getting it out of my system) my parents are taking me to the minute clinic for an ongoing cough. i smoked weed Feb 6th and it's now Feb 28th. i also vaped a couple days ago. im pretty sure the THC wouldn't be out of my system yet but i was wondering if anyone knew if they saw nicotine or THC in any of the chest x-rays (probs not that but) or any other kind of test if they would tell my parents? someone told me they aren't aloud to say because that's not what the test was for. thanks and pls not hate !