Swelling after a Rhinoplasty surgery can be present up to 1 year post-surgery depending upon the extent of the procedure itself.  Generally, the majority of swelling goes away in the first 4-6 months, but it can take up to 1 year for the results of your Rhinoplasty to truly be seen properly.

The main thing is to make sure your surgeon is experienced in nasal surgeries to minimize recovery issues as much as possible.  If you have any concerns about the swelling, it is best to address this with your surgeon directly.