Post csection causing chills??

I had my son 2 1/2 wks early, and ended up having a csection on Nov 21, well I go back Friday for my 2wk check up, but I'm still really sore, all the steri strips have fallen off and I've been cleaning it in the shower with soapy warm water like the doctor said, and the incision feels warm to the touch, and I've been having chills the past few days, is all this normal???