OOC-ed from OCS! Need insights!

Got officially OOC-ed from OCS, and was wondering what NS will be like from this juncture!

How long will I stay in HQ until I get posted out?

Was from a MONO intake in BMT, what are the chances that I be sent back there? Or what are the other possible vocations that people who OOC from OCS usually get posted to!

Will appreciate all sorts of insights/advice. Thanks!!