Small pea sized lump top left breast near cleavage that moves and can kind of be seen through skin pain deep in area after pressing around there?

Cysts. There are times when an injury or inflammmed hair follicle will develop a cyst . Other times it is random. See a dermatolgist if the cysts are enlarging or becoming red or sore. A dermatologist will be able to determine if the lump is a cyst or some other condition.