Sensitivity and throbbing in #15 after root canal

I had a root canal in tooth #15 eight days ago.  Three roots, all went well.  I now have a temporary tooth. I was in intense pain before the root canal, into my head and ear and jaw.  After each of the two procedures to complete the root canal, I had hardly any pain. The root canal took two visits.  Now that the roots have seemingly been removed and the root canal is complete, why is my tooth sensitive to touch and at times I have a throbbing feeling in it.   It's just sensitive when I run my tongue over the tooth or touch it with my finger.   I have no pain, though, and no toothache.  It doesn't seem sensitive to hot and cold.  Is this normal?
Susan

[scottma]

Post-op sensitivity associated with canal obturation may last days to weeks. going back to your endodontist to have a post-op exam is advised if symptoms persist.