I am concerned that I have a lump between my breast . I noticed it months ago but when I first saw i I thought I got bitten by an insect and just thought it was a spot. It was sore and red but the pain went away after a few days. I have noticed that in the past week the lump has increased in size it s approximately an inch now, to be honest although I see it everyday I forgot about it but it has become painful again so I am very concerned. There is no discharge , it s just very tender and sore. I use to smoke but stopped 3 years ago, I then started again 2 years ago on and off but went through a period where I was smoking an awful lot between July 2011 and February 2012. I decided to stop because I would get occasional chest pains which has now stopped. Could you please let me know what you think the problem is?. Thanks in advance for your help.