How long to get ur results for a urine test ?

Quick summary, had a pre employment drug screening 2 days ago. Before the drug test I had already received the conditional offer with paperwork and everything. Gave my test and then the next morning I got a email from my recruiter with another welcome email with a specific start date and everything. Is it possible that my test results already went through and everything was good? Or is this just a coincidence that the next day after doing my urine test I got a welcome email. Just unsure if I should stop worrying for my results now ,

Thank u