Lori,
"Hi" from another Hoosier (originally)! I don't know what the sore throat is before surgery, but I would definitely call your doctor's office on Monday and give them the heads up about it. If you are getting sick, you do not want (and your doctor will not want) to do surgery. It will be frustrating if it's postponed, but you will not be the only one to which it has happened here in the past 2 weeks. Your overall health is critical, so please address concerns to the doc.
Hoping you're much better soon...

wr