IRREGULAR to the max 🙄

Hi, 
I was such a late bloomer. Started at 17.
I'm 21 now, but I'm super irregular. So irregular it doesn't even have a pattern, not in symptoms, our even cycle wise. It's unpredictable. Honestly I can't remember the last time I had one and I can't track it. I want to guess September... 
I schedule an appointment to see a specialist but can anyone give me a heads up on their experience? Worst case scenario I know is cervical cancer but I can assure you that's not the case here. Comment away ladies!