Majority of patients do have swollen gums after their braces have been removed, but most subside after one or two weeks with good oral hygiene.
If your gums remain swollen, it is better to let your dentist check to ensure there are no gums diseases or leftover remnants of glue that is irritating the gums.
With proper cleaning and maintenance, the gums should subside with time.
Good luck and don't forget to wear your retainers!
