Extremely worried about drug test.

I weigh 140lbs and used edibles for about 2 months daily. I stopped April 16th and have a drug test on May 27th. I’ve been drinking water and cranberry juice like crazy but I still don’t see that second line for a positive on at home drug tests. I plan on using the certo method on the day of testing if I’m still not clean by then.

I really need this job. My entire family is so happy for me but if I fail the drug test they will all know (they hate weed) If I fail I don’t know what I’ll do to myself. If there’s any more advice on what I can do while I still have 3 weeks until testing please let me know. It’s a lab test at a hospital so I don’t want to use synthetic urine or anything like that. I think certo is my best bet but please let me know if anything else has worked for you. I haven’t been able to think about anything else but this test.