Lump in breast...suspicious...

[greeneyedambe]

Hi all! I have noticed a lump in my breast over the past few weeks. It is on my right breast kinda on the outer upper edge where my breast connects with my chest. I have shrugged it off as backed up milk b/c ds has always preferred the other side much more but now I am getting worried. When I massage it or squeeze it, I get out some milk. It doesn't hurt until I start messing with it. I massage it while ds is nursing but it never seems to go completely away. It is not noticable all the time but definately more sometimes than others?!? Any input/advice is needed. I am not sure what is going on with it but am starting to get worried. I am only 23 and would think that my chances of breast cancer would be pretty slim seeing as how there is no family history. Please help me!

Thanks in Advance!
Amber