A member asked:

I had unprotected sex 2 1/2 months ago. i got tested 2 weeks after sex and last week. both were negative. now i have a blister inside my cheek.herpes?

A doctor has provided 1 answer
Dr. Paul Grin answered

Specializes in Pain Management

Aphthous stomatitis: Or canker sores the most common observable lesion by the dentists. The topical anesthetic otc application is recommended. Individual ulcers typically last 7-10 days. Rec.: see your dentist if concerned.

Answered 1/24/2014

4.5k views

Thank

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