Small bump on tip of nose after Septorhinoplasty? What is this and will it go away?

Thank you very much for enquire.

Swelling after a rhinoplasty depends of the surgery complexity.
In this regard, the nasal swelling Post-op It can last from two weeks to two months.
To reduce this swelling, I recommend you perform delicates daily lymphatic drainage massage therapy over the face (around the nose) avoid sun exposure, and take pain/inflamation pills, as your surgeron precribe you.
Kind regards, 
Dr. Emmanuel Mallol Cotes.-  

it is very difficult to say with certainty what is the cause of the bump. It may be mild irregularity of the tip cartilage, cartilage graft visible through the skin or a local infection/ fibrosis. There seems to be a small area of erythema (redness) around the bump which may go along with the infection etiology. I suggest you speak with your surgeon about this. If there is an infection it may need to be medically treated.