I think you need to take heart from the fact that your doctor does seems pretty certain this is benign, but to put your mind at ease and because she can't be 100 percent certain she wants to just double check. I should think for this reason, that she isn't alarmed, you probably won't be referred under the two week (urgent) rule. I don't know if she mentioned to you the timescale for referral in your case? It is entirely natural that you are really uncertain and can't focus and feel frightened, as unless you have a definite 'ok' from a consultant the mind will often fix on the most scary and unlikely scenarios. Ann is right, most breast clinic referrals are for benign reasons, but because people are so 'breast aware' now they jump to thinking bc for any slight change. Of course it is is right and proper that you visited your GP, as you are doing what is necessary in alerting to changes you have noticed. This is, unfortunately, going to be a somewhat miserable wait for the appointment - but do hang onto the words of your GP. Let us know how you get on, and you are always welcome to chat on this thread of elsewhere about your concerns, and ask questions. I will also add, and please remember I am not a medical person, and this just an opinion - but a pea-sized lump 4 years ago on the back of you neck, is actually a long time ago in terms of possible cancerous changes, and even if there was a connection by now you would be, to my mind, in a much more advanced condition.