It's about the size of a 5 pence piece. Only noticed it today. I had taken my bra off to get ready for bed and the area felt sore, so had a feel round and felt this lump.
DH said he can feel it too, I have had a look at the area in the mirror and it is red and almost bruised looking and slightly painful/sore.
Going to ring GP on Monday to get an appointment. I am scared and trying my hardest to stay away from google!! Don't think I will get much sleep tonight.