Seeking Advice on Cushing's Diagnosis Process

After a long time of suspecting I might have Cushing’s or a similar adrenal issue, I finally found a PCP who takes me seriously and am starting the workup, but I’m anxious about the diagnosis process, due to comorbidities/conflating factors. How did y’all get a dx? Were or are any of you currently diagnosed or previously misdiagnosed with PCOS? I’ve done an am cortisol blood test and am waiting to get results from a 24 hr urine collection, but if anyone knows of something I should be checking or doing, please share. I’ve been living with symptoms for over a decade and I just want answers, whether or not it turns out to be cushings after all.