hello..I am a breast feeding mother of 19 months baby..one of breast i.e left stopped producing milk when my baby is 13 months old..so..I fed my baby only on my right side..it has been 3-4 months that I stopped breast feeding completely..and now from few days my left breast started paining when I touches it...it doesn't effect my daily activities...but I feel pain when I am touching it...and I don't feel any lumps in it...what should I do..? and can I know what is the reason?