if that isn't helping, give them a call for further advice.
It is in my mouth. I went to the dentist for a cleaning when it was there for about two weeks and she told me gargle with peroxyl rinse.
you should see your dentist at this point. this could be many things and since it's lasted a month, time to get checked out!
if this ulcer is inside your mouth and has been there for a month, not likely herpes related.
Hi only testing confirm but one month is bid to long to have a herpes sore without it scabing over and healing by now/