Hi, Welcome to JustAnswer. I am a licensed veterinarian and I'm here to help you. Clavamox would be good. However, antibiotics do require a prescription from a veterinarian who has actually examined Squeaky. Do you have any antibiotics available to you?
The other treatment would be for you to warm compress the area for 5 minutes 2 times daily. This will draw up any infection/inflammation that is under the skin.