Yes, I think swelling rises to a peak 24-36 hours after a trauma. And because the traumatised area is surrounded by bone there is no leeway for tissues to expand to.
It might help support the area if you tie a scarf or cloth from under the chin up over the ears and to the top of your head. A little bit of compression might be soothing and help your body push the tissue fluids back into your bloodstream.
Prob, need to take a Digesic, sit in a warm darkened room and catch up on guy movies or a good series with trackies on.
Deadwood, Justified, True Detective. A good classic war movie is Fury with Brad Pitt.
A 'time-out' day.
Not likely to even begin to improve or stabilise until tomorrow night or Saturday morning.