When pregnant with my first child in 2001, I noticed a little blue bump slightly under the skin, between my breast area, more over the diaphram I believe. I was in the tub with a huge belly. When I got out I sterilized the area with alcohol and sterilized the pin, and dug it out. It was a tiny black hard thing, shaped kind of like a roundish, but not a ball, with maybe tiny tiny bumps on it. I broke it open with the pin, It was very tiny like the size of this letter " a ". Inside the hard exterior was nothing. I shrugged it off grossed out & never looked back. Since then, I did get another one after the pregnancy was over, and could not retrieve it. Then between 2001 and NOW, I have had 3 more that I removed on my own, this time in my breast. I thought it was a hormone change or something, but now I am concerned. My friend is older than me and just had a mammogram and ultrasound, then a biopsy of some fibroid tumors. I have been thinking about my situation a lot worried What are they?