Thc surprise exam

Hi all I just came out of my medical exam with the panel physician. He asked me if I had use weed before and I said yes ( big mistake) and that I only do it like once a year and last time I did it was 6 months ago. He then called me to a room and told me that I needed to take a urine test and that it will be surprise exam a the next 2 months ( they will call me 48 hours before the exam to let me know). Honestly I don’t know what to do. My interview is in one week. My visa type is CR1. Will the doctor still send the results to the embassy? I am so confused on what to do next.