I'm 12 days post op and have it too! It started around one incision, the one that had the most surgical glue. The nurse said it looked like they finished the bottle up on that incision. I started with hydrocortisone today, and it's helping.
There's a powder, domeboro. You mix it with Water and it then soak the affected areas and it helps dry up some things like this. I had poison ivy on my legs, and used wet paper towels to drape it on the itchies. It helps cool the itch.