Drug test advice THC

I just accepted a job offer that requires a urinalysis for onboarding. I quit THC around July 26/27 of this year. I was a chronic user I’d say for about 4 years. I took an at home test (Walgreens 4 panel) and at first glance, it looked like i had failed the thc portion, but then i realized there is the faintest line possible indicating its negative (a pass). I dont know when my drug test is scheduled for quite yet because I just accepted the job offer yesterday. However, im in a bit of a panic. I’m trying to do as much research as possible. When i tested myself this morning i made sure it was my first pee just because i wanted the most accurate results and i wanted my pee to be higher in concentration to ensure it’s not in my system. But I’m doubting myself and I’m worried that this is going to affect me getting the job. Does anyone have any advice to ensuring i pass? I haven’t submitted any paperwork yet but i plan to do so sometime next week.. trying to prolong it so i have time to get it out of my system but its been roughly 42 days already and the fact that its not certainly out of my system based on this Walgreens test is concerning and to be quite frank im freaking out. Any advice is helpful. Oh and I have way too much anxiety to do the synthetic piss stuff..