What Is The Painful Crater After Treated With Yeast Infection?

I very recently had a yeast infection which I treated with an OTC 3 day Monistat, then followed up with my PCP for pain and swelling on the left side of my labia minora and vagina. She said the yeast infection had cleared and thought that maybe I had experienced a Bartholin cyst. The pain on my left labia minora had not gone away so I looked closer and discovered a pin prick size crater barely visible that was ridiculously painful to touch, but only hurt when something is rubbing against it. I have no ulcers anywhere else, and the swelling has subsided. Any thoughts?