It looks like you have a pretty narrow window between your rhinoplasty and your already scheduled orthodontist appointment.
My sense is you need to consult with your orthodontist who able to best advise you. It may be wisest to see if they have a quick "pre-visit" with the...
At 4 weeks, a subtle remnant of a hump is likely swelling. The after photos demonstrate a much improved profile. Find a plastic surgeon with ELITE credentials who performs hundreds of rhinoplasties each year. Then look at the plastic surgeon's website before...
You really need to see your own surgeon about this as soon as you can. Only he/she can reliably assess you and either alleviate or act on your concerns.