I have noticed a pea sized part just below the skin layer which is movable using the forefinger with little pressure on it, if I use my thumb and forefinger I was not able to catch it.i went to GP who proscribed antibiotics and vitamin tablets for 5 day. The place is just close to arm and chest merging area. After the antibiotics that pea sized part is little reduced but not fully. It's been around 11 days. Very dull pain is there for sometime, the arm fat near that area looks very less swellin