Herpes or Canker Sore

I've had this canker sore for just a week now along with one on my upper gum on the left side, the developed while I was sick. Herpes or Canker sore?

Located on piece attaching lip to gum

canker sores develop inside the mouth.

So you're leaning towards herpes?

yes

ask your physicuan for Zovirax Ointment

Not herpes, just a canker sore!