gnos

i am 18 years old, ive been smoking for the past 2 months, had a 2 week break at the end of the first month due to traveling to another country. ive been clean for the past week + drinking about 1.5 gallon of water for the past week as well. i have a doctor physical coming up which is done every year. my question is CBC (complete blood count) does not test for THC correct? Also the urinalysis, which is done for kidneys--to see if they are working properly is not also a drug test right? PLEASE help, i am stressed out about this, my parents cannot find out.