From the Massachusetts Dental Society:
If you notice any of the following signs of gum disease, see your dentist immediately:
- Gums that bleed when you brush your teeth
- Gums that have pulled away from the teeth and are red, swollen, or tender
- Bad breath that doesn’t go away
- Pus between your teeth and gums
- Loose teet
- A change in the way your teeth fit together when you bite or a change in the fit of partial dentures
Read more: https://www.massdental.org/gumdisease.aspx?id=992