I live in Los Angeles and I've heard the Pacific Southwest region is notoriously backed up on medical so expecting to hurry up and wait.
I lived in SoCal before starting with the FAA a few months ago. I believe the FAA has seen the bottleneck in the medical process as medicals are no longer limited to the region where you live. For example, my medical was cleared by the Great Lakes regional medical office.
And if you received a call from the FAA to retake your urinalysis, that is a good sign as they wouldn't want to pay for a third urinalysis in another six months.