welcome to health care magic
just a small lump on the base of neck is not a cancer...
first of all check your self in the home by seeing in front of the mirror to rule out any structural changes and gentle palpating the breasts,,,with out a lump in the breast
and no structural abnormalities,no need to worry about breast cancer
... definitely it is not an breast cancer
for your kind information i will tell you one thing,,in very advanced cases of carcinoma,breast metastasis
go the nodes(lump)and they will enlarge. but in your case it is not the problem...
secondly you did not tell the details of lump in the neck,,
if it is soft,freely movable,painless most probably it should be a lipoma
consult general surgeon
and he will tell you clearly what's that lump is...?
mam dont worry too much about breast cancer if you dont have any palpable lump in the breast..
hope you understand my suggestion and answer..