Because of the elasticity and recoil of the skin and soft tissue covering the nose, it is doubtful that repeatedly pulling on the columella (the bridge of skin between the nostrils) will create much meaningful or long-term change. Structural grafting with rhinoplasty would be the best way...
Did you change anything in your routine that may have caused your swelling to increase? It is not abnormal to still have swelling at this point following your procedure. However, you should be evaluated as soon as possible to determine whether or not you have an infection, as you mention there...
The bump on the side of your nose is most likely a bone fragment or improperly realigned nasal bone. I would suggest following up with your surgeon for evaluation. I would not suggest revision for at least another four months. If it is a boney abnormality it should be a...