Finally i got my PR today! I know how frustrating it is to wait without knowing how the application process is going. This forum definitely eased my frustration a lot as it gave me a rough idea where i was in the process. So here is my detailed timeline. I hope it helps
SINP single inland applicant
Jul. 21, 2016 - cic received application
Oct. 10, 2017 - medical request
Oct. 17 - medical done
Oct. 20 - medical passed
Dec. 16 - BG in process
Jan. 4, 2018 - PPR
Jan. 11 - cic received documents
Jan. 24 - approved
Jan. 26 - got the PR
Took almost exactly 18 months!
Good luck everyone.