Hi, I too, have been having left
(a vertical area mostly, and
under armpit and
top of arm) and left
breast pains. The pains could be explained as sensations, shooting pains, twinges, or a slight dull ache that comes and goes, almost everyday for 2 months now. It seems to have come out of the blue. Because I get so worried, I sometimes get heart palpitations, which I have had before, but I have had an EKG and echocardiogram, so that's all fine.