Hi Pankaj thanks for your question
Male breast cancer
is a well known entity .
Breast cancer involves one breast .and is usually painless unless it is in advanced stage.
.swelling which you had at the age of 14 was mastitis
(inflammation of breast ) which usually occur in male at the time of puberity due to varoius hormonal
changes and remain persistent for some years.what you are having this time is continuation of same process.
so most probably your having mastits.which if remain untreated will get settled of its own.Get youself examined
by a doctor to differentiate between mastitis and breast cancer.Hope I answered your question.