Too much tissue?

[Tytus]

Hi,
about a year and half ago I noticed a painful lump under one of my nipples. Im almost 29 years old now so lets say its started when I was 27. Never had any similiar problems. My weight is 85kilos at 1.84m height. Im doing some work out once in a while. So lately I visited doctor and was sent for USG. This took max 30 seconds and only thing I was told that I have got too much tissue and there is nothing that can be done. Doctor left and now Im even more coffused. Thats why Im here, Im sure I will get more information on it from you guys than from that doctor. What does it mean Ive got too much tissue? Thats the proffesional naming? Googling it doesnt really show much. I googled also puffy nipple and same thing. Im really lost here. Something like that shouldnt really pop at my age or? Im attaching a pic of nipple that look excatly as mine. Thanks in advance!