What I thought was a cold sore gone rogue turned out to be an infection of the gland between the lips and the face (which I didn't know existed)! Doctor popped it
Popping a Cold Sore: What Happens and What to Do Instead
Is It a Cold Sore or Pimple?
Is it a Cold Sore or a Fever Blister?
Get Rid of Cold Sores Faster by Popping Them - Patient's Lounge