Re: root canal

You could still have some residual infection and or the filling could
be high. Are you taking antibiotics???? If not see your dentist because
you might need some.
This sort of thing happens when you wait until the tooth starts to hurt
before getting a root canal, what that means is that an infection has
already started to spread and this needs to be attended to by taking
antibiotics. The antibiotics will destroy all remaining bacteria and
the pain will disappear.