I had a tooth extraction 2 weeks ago and took Amoxicillin during the course of it. About 5 days after I rinsed with the mouthwash directed to me. I immediately felt a searing pain like flesh was literally being burned off my inner lip/cheek/gums. Since then, about a week now, my inner lip is swollen, red and burns. I can feel cuts and elevated tissue on different parts of my inner lip. I stopped with the mouthwash and and pretty much been taking it easy, but the status of my lip hasn t changed. What is this, will it go away, amd what can I do to fix it?