@Pommy8 - It is possibly just nerve pain as they 'reconnect' ..... but if you are really concerned - I think you should have a chat with someone & see if your Surgeon's appt can be brought forward (usually you see them 12 months after the surgery) - I know that my surgeon has an ultrasound machine in his rooms & always does one on me when he sees me (my 5 year check will be in Feb.)
Do you have a breast care nurse? Maybe have a chat to her - she may be able to get you checked out sooner than later. Keep in mind that many/most surgeons have at least the first 2 weeks of Jan off on Holidays ....
My motto is:
If in doubt, get checked out.
Take care & all the best.