finally my body is doing something

so my period has been missing.. I mean literally vanished.. my last one was July 31st to August 2nd.. it's been pissing me off because it's been confirmed that I'm not pregnant but still had to just wait around and see if it would come back on its own.. I was supposed to call my doctor if I hadn't had a period by tomorrow (because she told me to wait another 4 weeks when I last saw her).. and surprise surprise this afternoon it appears.. 80+ days without a period for no obvious reason.. talk about a mind fuck