Can i buy antibiotics from the chemist?
No, sorry. You need a doctor or a dentist (probably a dentist) to diagnose your condition – your infection might not be bacterial, and if it is, you wouldn’t know which antibiotic you needed. The type needed depends on the class of bacterium you are infected with. Training and experience are needed to decide which antibiotic is most appropriate. If you’re unwell, you should probably go to your dentist. Or you could buy some chlorhexidine mouthwash, a strongly antimicrobial that’s available in chemists. Use it twice a day, and rinse your mouth with warm salt water in between. Depending on how bad your gum is, this might be just as effective as antibiotics.