I Had An Appendectomy Ten Days Ago On A Thursday,

I had an appendectomy ten days ago on a Thursday, recovery has been going well up until the second Saturday after surgery. I began to get a rash and itch that seemed to move to different parts of my body. Today the itching has subsided but I'm experiencing substantial swelling in my hands and face. Is this a delayed reaction to anesthesia? Also have bad indigestion