Hi, I have never had an issue with mouth sores or fever blisters. I now have blisters that consistently come up on the corners of my mouth. I have used every over the counter product for fever blisters and some of the products will relieve the pain and reduce the size but will not completely eliminate, they consistently flare up, never healing. Should I see my physician for an antibioitic or an ointment .....please advise, thank you !