I have an oblong acorn sized lump in the upper left quadrant. The lump just became noticable over the past few weeks. For months, I have felt an odd sensation of numbness, spasm and brushing of a feather on the skin in the 2" diameter area of the lump. When I bend over to tie my shoes, I can definitely feel pressure on the lump. At times, the lump is pulsating, especially when I've been active. It is located directed below the middle of my breast about 2" below my last rib. When in a car, it feels like the seatbelt is pressing on the lump area but in fact, nothing it touching it. There is relatively no pain, unless I have been pressing on the lump.