Should I be concerned?

So I was doing some pre employment stuff for this new job. Background checks and they were waiting on me to get a drug test literally the day before I had the appointment to get my drug test they kept calling me to see if I was going and I told them yes I got it all set up for the very next day. I got my drug test all done and it’s been a little over a week now since I got it done and radio silence haven’t heard from them at all and every time I’ve tried calling and leaving a message for them to call me back nothing. Does this mean I didn’t get the job does it usually take a little bit after you do a drug test to get started? I feel like it’s crazy I’ve been going through the hiring process for this job for almost a month now. Two interviews a two week apart then a week of waiting to here back. To then go get the drug test which took me a week to get done and now another week with hearing nothing at all. I passed up on another job for this one cause it seemed like by this point I pretty much had the job, I do still have a job I’m working at currently but I’m waiting to quit so I can start the new job. I’ll give it a bit more time since these guys seem to like taking there time. But I wish the communication was better they couldn’t stop calling before now it’s radio silent.
Should I be concerned?
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