Hi there,
first of all i dont want you to worry, this 221g Ds5535 is very normal prcosess. I did lots of reading and research about it, from my experience with that; your answers have to be very accurate as much as you can, dont be scared or worried coz every case is different, they look for a pattern of your travel history, verify your profile. On average it can take anytime between few weeks to 6+ month in the worst case.
most important, did they return your passport to you at the end of the interview? If no this is a good sign.
if you have done the medical already and by the time they completed your AP will be 6 month after your medical you may need to redo the medical and re submit the results.