My nose looks bigger after a fight. Is it going to be like this forever?

Yes, swelling will definitely come down. The more important question is, did you fracture your nose? If you did, you will need a reduction. And if you need a reduction, it is better to do it within a few days of the trauma. So if there is any question of your nose apperaring to be deviated or crooked, I would seek an immediate evaluation by a rhinoplasty surgeon.

I recommend that you visit your primary
care doctor for an in-person examination of your nose. Best of luck.