Hello Christine, and thank you for posting.

I'm sorry you are having problems with jaw pain, neck scar and a feeling of palpitations. I wonder whether you have spoken to anyone in your hospital team like a specialist nurse (CNS) or contacted your GP. It might be an idea to let someone know as they can assess it properly and offer some advice and decide if it needs to be looked into further. 

I have placed here some information from Macmillan's site on late affects of cancer treatments which may be useful. 

Other people on the forum in similar situations may come forward with their experiences since surgery, but still good to get it checked out.

Take care and if you want to talk things through with one of the nurses on our helpline the number to call is Freephone 0808 800 4040, 9 till 5, Monday to Friday.

Sarah.