Hi. I discovered a pea sized lump on my cleavage 2 weeks back. It is not red. It was less than a centimeter. Over the last week it has been very painful and I did poke and prod it a lot to keep checking. It is soft but I can't tell it is a perfect round or oval.It can be seen through the skin a bit. It pains when I push on it. Till yesterday, I was getting a pain/burning sensation throughout the area, extending to my left breast but today the pain is much lesser. The lump now measures a bit more than 1 cm. The lump seems to be mobile and kind of flattens down when I'm in the reclining position. I am extremely worried. Can this be a cyst?