Can cortisone injections cause swelling?

Iam 11 weeks post op. Its my third surgery and i have very thick skin and scar tissue appears very easily. I got a cortisone injection today on my nose tip, and above the tip. My doctor said it was a low dos. During the day my nose has swollen more and more, and my tip is extremely big, bigger then before the injection, so my question is will the swelling come down? Or will this swelling stay and more scar tissue will appear? My doctor said I should wait one week before I start to massage it.