Hi LJiljana,
I just wanted to tell you, I'm from Croatia as well. My husband has a Canadian citizenship and I'm in Canada with him as a visitor. Before I applied, I wanted to do my medical in Croatia, but there were some problems with the form, so I called the CIC and they told me that I can do my medical in Canada and I did so. When I requested the notes, it said: "medical: passed". It seems like the results are valid for 15 months. I did my medical in January 2013 and it says on my application that medical results are valid until March 15, 2014.
Since I am writing, I wanted to ask for a little help. I mentioned my timeline couple of times, but I'm gonna do it again. Application received on March 25, 2013, sponsorship approved on April 17. I'm in Canada with my husband the whole time as a visitor. On January 9, 2014 I went to Croatia and stayed there for 3 weeks. The day after I returned to Canada, I got a phone call from Vienna (to my parent's house). They told my mum that they are calling just to check where am I. So, now I'm worried they they will stop working on my application just because I'm in Canada. They didn't leave a message for me nor did I get an e-mail. Does anyone know if they usually call people to check if they are in home country or in Canada?