Is It Normal for a Persons Top Lip to Be Large Even a Month After Their Braces Are Removed? Will It Ever Go Back to Normal?

I  have had my braces removed, I've had them off for a month. Before I had braces my top lip was quite small, and the area between my nose and mouth was very tight and small as well. I knew when I had the braces on that that part of my face would stick out, but I thought it would go back to normal once I had them removed, however that hasn't been the case! It still looks like I have braces on even when I don't. My question is whether this is common and maybe my mouth needs to do some retraining but will eventually go back to being small and normal again, or if this big puffy top lip is a permanent thing.