Is This Bump After Rhinoplasty my Bone?

When bumps on the nose are "shaved" in surgery, the bone is stimulated. This is just like breaking any bone in your body.
When bones first heal, they form a "callus." This callus then gets smaller over a few months time until the bone is smooth.
So, I wouldn't be concerned about a persistent bump this early. You should really wait at least 6 months or more before becoming concerned. Time is your best friend right now.

It is a common concern in the early phases after a reduction rhinoplasty to feel that 'not enough' was reduced.  Time, patience, and optimizing the healing all come into play before any consideration of a revision.  I will not consider a revision until the area reaches equilibrium with the surrounding tissue with respect to swelling, and firmness.  This typically takes about 9 to 18 months. I hope this helps.Sergio Pasquale Maggi, MD, FACSdrmaggi.com

 

                  It’s
not unusual for patients to have mild contour irregularities of the nose
following rhinoplasty. In most cases, they can be felt but aren’t easily
visualized.

                  These
irregularities are often due to bone and cartilage remnants where the dorsal
hump was removed. As swelling resolves, they sometimes become more noticeable.

                  It’s
important to be patient, because the vast majority resolve with time. In some
cases secondary revisional surgery may be necessary. If you’re concerned about
post-operative nasal contour irregularities it’s important to discuss this
issue with your surgeon. 

Lots of early changes and swelling can cover slightly underdone results.  It is going to change with time.  In my 22 years of experience as a Rhinoplasy surgeon nearly all procedures that appeared "underdone initially" were fine as time went by.
Be patient and let yourself heal without stress.

Give this time. As bones heal they often form more bone at the fracture site with the intial healing provcess. This may make the area seem more prominent. With time the extra fullness is reorganized and the bump tends to subside.