If it's application received and medical received then in process your next step I believe. It should be like this
We started processing your application on date
Yes Friend. I got over it and passed the eligibility after second review. CIC had issues with my salary being paid in home country. You can check my earlier post in detail.
+1 to Gates and PMM for correct suggestion. First of all you should have mentioned in application queationnare regarding overstay. No one here would encourage you to hide. Go ahead and submit this letter. Overstaying is a problem when you apply for Visa not when applying for PR
In fact its too late already and order it ASAP and do it yourself. I know some who dint know what is happening to their application before it got rejected. E.g. if you are missing document , or MR email. GCMS will answer all your questions.