There is an old article floating around that described breast refusal as a
sign of Ca, especially if baby thinks other breast is fine.  And you said
the taste and color are different.  I'd go to a real good, breastfeeding
friendly or at least familiar doctor who specializes in Br Ca and make sure
this is not the problem.  It may just be that one side overall hasn't
received as much stimulation and is involuting, but I'd sure want a
mammogram or something like that to be sure.  Sincerely, Pat in SNJ