7 days vs a week
There is a joke in dental school, that with medication it takes a week to heal, and without, 7 days.
However, there are some things that are helpful. If you frequently get these, try the supplement lysine daily.
Avoid acidic foods and crunchy items that can irritate it, like potato chips. Rinse with warm salt water as a palliative measure. And there are OTC palliative salves.