Hi sabby83, definately call the nurse. My left boob was sooo swollen and much bigger than the other one and I had a slight high temperature but no other signs of infection. The nurse put me on a new course of antibiotics and some anti inflamitories and its going down now thankfully. If it was an infection, the sooner you catch it, the easier it is to deal with.
Hope it’s nothing for you, just to be on the safe side though