<s>[INST] I had a root canal on the upper left side (2nd last molar) at the beginning of May.  I have terrible ear, cheek, eye and base of skull pain.  My Dr. put me on amoxicillan and I am going back to the endonticc Dr. this week.  My pain is still present and I can hardly sleep.  Aleve takes some of the edge off of the pain.  Anything else I should do?  Get an MRI? [/INST] Has your root canal treatment just started? If so, u need not worry. The symptoms you have described could be referred pain due to remnants of pulp tissue in the affected tooth, that will get removed once the treatment finishes.Also due to instrumentation in the canal, u may feel sensitivity for some time. </s>