Hello Duchess
My situation was a bit strange and I don't think you are in a similar situation.
I did the exam at the end of May and I knew that I was fine in all aspect (I am a little over careful when it comes to my health to a limit where I do extensive exams twice a year and they have been all normal). The doctor uploaded the results in early June and they confirmed that everything was good and there was no update after that.
I sent an email to CIC asking them to acknowledge that they have received my results but they didn't respond.
A week later, I got a surprise from CIC............They asked me to do medicals (as if I didn't do anything). They sent me a new e-mail with a new IME form and number.
At that point, I was thinking that I could argue with them and tell them that I have already done the exam, but I thought that this would only delay my process so I did the exam again.
The doctor uploaded the results of the new medical exam on a Friday, on the Tuesday after (4 days later) my ECAS showed that medical has been received.
This was my situation and I am not sure what has happened but I am glad that my ECAS shows medical received.
From my search of the forum, I noticed that the following could cause delay in updating the ECAS with medicals:
1) Furtherance of medical exam --> similar to Rezafc's case
2) Further review of medicals by the RMO (Regional Medical Office) --> where the medical exam reveals that there is a small issue that doesn't need further tests, but still needs a confirmation that it is not something that could become serious.
By the way, I am not an expert on any of this but this is what I have seen happening and I might be 100% wrong in my analysis.