Hello, I have had a lump in my left breast for a couple of years it was a small, size of a lentil, small. It is still small but more like a plump pea or a little larger. It hasn t hurt much or if it did it was here and there and very little. The past couple of weeks. I have had tenderness in the side of where the lump is, and now there is a pinching pain or pulling feeling. The tricky part about this is that last year I was diagnosed with fibromyalgia. And in Oct I had a loop recorder put in to catch my heart irregularities. I have rapid and slowed heart rythem. I am not sure who I need to see. My of said that we would watch it while I deal with everything else. I am wondering if I may be having a reaction to the loop recorder. But I suppose my biggest fear is if it could be a sign of something else. Cancer possibility. I have also been experiencing chills off and on and extreme cannot keep my eyes open fatigue.