For those of us still waiting excessively long time and have had our docs expire. I would say just get them done again, before CO asks for them. Though medicals can't be done again until after CO does ask for it. However by what Simarjot stated his PR was still granted with a 4 month expired medical. Mine was done in February 2016. As my Ma has told me , medical renewals are up to individual COs discretion.