Do I have Septal Hematoma? (photos)

Having recently been assaulted, shortly after it happened i noticed a slight change in the shape of my nose, so after examining it myself I noticed a red bump had formed inside my left nostril. Originally I thought that my septum was deviated so I decided to get it looked at by a specialist. However, the specialist examined the exterior and interior of my nose and said that it was just swelling of the septum that would heal naturally within a month. I'm now extremely worried, please help