i wouldnt be surprised if they notified you as early as tommorow for next stage progression as myself and others that i know of were also contacted early. As for the medical you'll be fine it takes about half an hour to 45min to complete, vision and hearing tests, urine test, coordination n just things that youll be fine on really.
I herd there was alot of people yesterday for 2nd round interviews I have a Funny feeling domestic will be opnening shortly and bne and mel.