Thanks Scorph.
I received my oath invitation e-mail today (May 10).Just as a reference to future NB applicants(because there is not many),you can see my timeline below:
Applied : October 16 2017
Test : feb 13 2018
DM : feb 14 2018
Oath Invitation : May 10 2018
Oath : June 7 2018
Office : Fredericton
Good luck all.