I had an abscess tooth in May. It was from an old root canal on #14 and turned out to be an extra root. Anyway, my cheek was swollen and I was given a week's worth of clindamycin. The swelling went down and the root canal redone in July. It felt fine initially, but now I'm feeling something in my cheek where it was swollen and the tooth behind 14 is sensitive. Any ideas? Is the infection gone, and is this normal? Thanks.