Hope someone can help

I have been having this pain on and off for the past week.
I even did not have it for 2 days in a row and thought it was gone forever, but then it came back full force.
I am worried because it causes me debilitating pain.
I also worry that it could be related to root canals? unfortunately I have 8 RC, all were done in the past 5 years.
Please help. Tweet