10 Weeks After Rhinoplasty and Not Thrilled. Will my Nose Get Smaller? It Looks Huge!

First of all, no matter what happens over the next 6 months, you are probably not "screwed".  While no one wants to think about having more surgery when they just had it, secondary surgery is certainly possible and fairly common after rhinoplasty surgery. With out seeing pictures or examining you, it would be near impossible to tell for sure whether or not this would be the case. After all, it could just be postop swelling. If you don't like the answers you are getting from your present plastic surgeon then you should seek out a second opinion.   

You are correct in most cases the majority of swelling will disappear at 10 weeks or so.  But in some patients it takes longer.

You are very early in the wound healing process. I would not expect that any of my Rhinoplasty patients would have 85% of the swelling gone by the time frame you suggest. In fact swelling will remain for as long as 12 months. Most will go down by maybe 6 months. You have to be very patient in this process. Wound healing and scar remodeling is measured in months to years not days to weeks. Just be patient and your final results will be revealed in time.