Itr processing timelines ?

For the last assessment year ( 2016-17) , I have submitted my return online during July 2017 ( within timelines ) , had done e-verification using aadhar and recieved my ITR-V.

But my return is pending for Processing till date  ( as I checks on incometaxindiaefiling.gov.in ) . Is there any standard timelines for IT department to do processing ?

it has been almost 6 months and By When can i expect my return to be processed ? What should I do ??