Could this be mets?

I don't think anyone here can give you any really definitive answers, and even if someone did have the same sort of pain that you do, their reason for it and yours can easily be completely different. Paranoia is kind of "normal" for all of us, I think, though, so you aren't alone in that boat. In any case, I think most oncologists tell us that unless a pain or symptom continues for two weeks or more, we shouldn't worry about it---which is easy for them to say, right? If it were me though, and I was so freaked out about it that I was worrying myself silly, I'd probably go ahead and push for whatever tests were necessary, asap....but honestly, you should be fine to wait another week and see if it gets better or goes away.

To actually answer the question though, yeah I've had pain like that multiple times, and it was because of a sinus infection, which in my case led to tonsillitis. I also had something pretty similar that eventually turned out to be an infected tooth. All of this was years before I had cancer.

That's a really common area to have pain and swelling with sinus congestion. I hope it eases soon.

Great news!