Hello, don't worry, the additional TB test is very common, we faced the same situation, apparently, the process will remain the same with other persons with the same AOR as you, try to follow up theirs, when they will have " medical passed", in your profile " you will have "medical results under review". You will receive the Biometric letter at the same time as you AOR colleagues. Be patient, do the test and wait.
My husband, did the 3 months sputum test and a second x-ray after. His results are negative. Our doctor sent them yesterday. We are still waiting the profile update from under review to passed.
Here below our timeline:
ITA 10/01/2019
AOR 25/02/2019
Additional medical exam mail 06/03/2019
Medical under review 11/04/2019
Bio 14/04/2019
I hope it's helpful