sensitive gums after root canal

I had a root canal 2 weeks ago because of an infection in the tooth. Since then my gums and the tooth itself are sensitive .. almost a tingly feeling in the gum which radiates up the tooth. I went back to the endodontist last Friday and she put me on another course of antibiotics and said it was still infected under the tooth. I am questioning an infection because I can't really say it hurts, more of a weird sensation when I touch my face in the spot or rub the gums with my tongue. There is a lump there .. that was where the infection began I assume because it was there in the beginning of this whole mess. I have not gone for a crown yet because of this. Any suggestions?? Also, I had a cleaning and xrays 1 week prior to developing this infection in the tooth. Could the cleaning have caused it?? Any help here would be most appreciated!

[scottma]

It's not uuncommon that endodontic infection can result in periodontal infection.Once the root canal is completely debrided and obturated, periodontal infection will subside, unless there is a coincedent periodontal pathology .