Small Movable Lump on Neck Under Jawline (Right Side) After Chin Implant -- What Could It Be?

I had rhinoplasty/septoplasty and chin implant on 7/6/2012 & I am at post-op day 9. When the bandages were removed on day 7, the right side of my chin swelled more than the left. I pressed gently along the right side of my neck under my jawline and noticed a small lump a little larger than a pea located ~1 inch to the right of incision. It moves a bit locally when pressed on. The chin swelling has evened out but the lump is still there. Cause for concern? I plan to call surgeon tomorrow.