question: had a root canal done after xrays were taken. there was a sore bump near the next tooth back.  besides on the other side of the mouth on the bottom there was a tooth that was sore when I put pressure on it..  xrays were taken and the problem was there was a puss pocket at the top of the root.  The dds redid a root canal.  That evening at home I put some pressure on the gum near the root canal area and green puss came out.  still a few days later the tooth on the mottom on other side of mouth is tender..could there still be infection I certainly felt he should have done so.  Is there a concern about this situation.  I do want to have a mouth that doesn't hurt. in the mouth?  the DDS did not give me an RX for an antibotic