When I was worried about my 3rd line I consulted my consultant and their reply was:
"We do not ever recommend checking the status online, as this feature of the CIC website tends to be unreliable, inaccurate, and infrequently updated. The visa post will not confirm receipt of your medical results under any circumstances. It takes approximately 3-6 months after the date of the medical exam to receive further correspondence regarding your application, and the visa post will not respond to update requests until said time frame has been exceeded. Rest assured, we will inform you AS SOON as we receive further correspondence regarding your application. All you can do in the meantime is wait, and we thank you in advance for your patience."