Just that. Background is one of my good friends has stage 4 lung cancer. Unlikely to last a few weeks now. She's only 38. It's a terrible tragedy. She never smoked, lived healthily etc and yet this happened. She had next to no symptoms either and then all of a sudden, it was too late. 
I'm a bit obsessive about stuff anyway, but bearing this background in mind, about a week and a half ago I found a raised red bump on my areola. It's actually one of those milk secreting glands (Montgomery gland I think) and it's like it has become red and slightly inflamed. It doesn't hurt or itch or anything. I stopped breastfeeding 5 months ago so can't see how it's linked to milk production. There's no actual lump or anything like that.
I showed it to the gp last week when I was there on an unrelated issue- she said it was probably a spot or blocked duct or something and would go away. However- no sign of it going yet and it's a week later...
I've basically convinced myself it's breast cancer
. I'm really worried. Apparently there is a type where the nipple and area round it goes all red/rash etc, and whilst I don't have this, my gland is red and I'm not sure it's right.
I know the answer here is to go bank to the gp if it doesn't go, but am I being ridiculous/unreasonable / overreacting because of the background with my poor friend?