Info please

I've recently tested positive on two FIT test that were sent to hospital, also on 3 x home ones too .  I'm quite petrified as I've also had pain alot recently too and lost weight . I have a consultation on Monday, no one has told me the process. Does anyone know how soon after a consultation they will do a colonoscopy apparently that's what I'm supposed to be having. My doctor sent me as an urgent referral :-(