When closing an open rhinoplasty, I have found that if I grab to much soft tissue in this area (the soft triangle) with my suture this indentation can occur. As the suture dissolves the indentation resolves. On one occasion where it persisted I placed a temporary filler. No further intervention...
This seems to be normal for the amount of work that you had done. It will take a few weeks to completely subside. Please continue to follow up with your surgeon.
Oily skin post rhinoplasty is common. This can subside after 4-6 months, but it can last upwards of one year post-op. Changes in the texture of your skin are normal. Secretions can occur after rhinoplasty because your blood circulation has been modified since the procedure and swelling occurs....