Is it possible to feel that your face looks more swollen after receiving Volumizer?

While looking into Volneumer
I saw a comment saying that your face might actually look bigger right after the procedure due to swelling.

I don't have a lot of fat on my face, but
I'm a bit worried because swelling shows immediately.

I have an important appointment, so I'm also struggling to set a date.

How long does it usually take to return to the original look of the face?
I'm not sure if I need to consider this aspect when scheduling the procedure.