Help How Do U Cure A Canker Sore On Lip?

I have one inside my upper lip all week. What can I use to cure it? I tried using salt pressing on it and made it become swollen and bleed. No I won’t ask doctor or medicine as my doctor is slow will reply in 3-4 days. It hurts a lot and red with blood

Help How Do U Cure A Canker Sore On Lip?
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