Is it okay to smile right after getting the Density test?

I'm looking into Density.
I have a lot of opportunities to meet people at my workplace.

If your face feels stiff after the procedure
It would be awkward if my expression looked awkward.

Especially when laughing or speaking loudly
I am curious if the face moves as usual.

Even if things like swelling go away after a few days
I think I'd be self-conscious about my awkward facial expression.

So I'm wondering if it would be better to get it the day before the holiday.

Is it okay to schedule an important appointment the day after the procedure?
I am most curious about these realistic aspects.