I have a disability so I've researched medical inadmissibility due to excessive demand a lot.
Here is how the system works
1. Your local medical center does not make any decision on whether medical is passed or not. It simply prepares a report which lists the results of all your tests & examinations done at the center. If you have any medical conditions, they will be a part of the report.
2. This report is then examined by the Canadian Health Services officer. He/she will either pass the medical or will flag it if it a potential candidate for medical inadmissibility on public health, public safety or excessive demand grounds.
3. If it is flagged, then the VO will take a look at the report. In case of excessive demand, the VO will look up what it costs for treatment of the diseases or disorders and see if the cost exceeds excessive demand.
4. If the VO determines that it exceeds, you will get a procedural fairness letter (PFL) giving you a chance to show that you won't be an excessive demand.
Considering that your medical hasn't been cleared, it is almost certain that it has been flagged for review. There is a good chance that you will get the procedural fairness letter, and therefore you should consult an immigration lawyer with experience in medical inadmissability to help you draft a reply (better do it now just in case as if you get the letter, then there will be very little time to prepare the reply).
Also, order GCMS notes ASAP. It will give you an idea on what is going on with your application and will help you/the lawyer in drafting a response if a PFL is sent.