How do I know when an abscess on my gum is healing?

I have an abscess that started on my gum and is slowly going backwards. The infection didn't start from a tooth (as the dentist's x-rays showed) and started from the surface of my gum. He prescribed me Penicillin and told me to check back in a week. Is the abscess still supposed to be turning white and... show more I have an abscess that started on my gum and is slowly going backwards. The infection didn't start from a tooth (as the dentist's x-rays showed) and started from the surface of my gum. He prescribed me Penicillin and told me to check back in a week. Is the abscess still supposed to be turning white and draining throughout the whole week as it's healing or is that a sign the Penicillin is not working? Thanks!
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