First of all, pus is the remains of human white blood cells that die after swallowing foreign bodies (such as viruses and bacteria). When the human body's immunity is stronger than that of invaders (such as bacteria) or less invasive bacteria, it will be swallowed and absorbed by white blood cells and excreted through the liver, kidney and urinary tract with blood circulation (erythromycin enteric-coated capsules are also excreted through gastrointestinal capillaries).

Secondly, if this happens again, clean your mouth (properly disinfect it, such as gargling, etc. ), cut and drain pus with a small sterilized blade (choose the incision and incision size reasonably), rinse with hydrogen peroxide (available in pharmacies), and take metronidazole tablets orally with purple liquid twice a day (available in pharmacies). It's done for a few dollars. It's simple. Of course, if the pus is serious, you should call a doctor.

Third, your situation is very common, don't worry.

Supplement: The easiest way to disinfect small blades is to soak them in alcohol for ten minutes. Burning the blade with fire is only used in special circumstances (the carbon on the blade may remain on the wound to form a tattoo, that is, a tattoo), and it is best to use a candle with less carbon!