I had my normal delivery 2 months earlier ,I do partially breastfeed my baby.Since 4 to 5 days I have been experiencing pain in left side ,I can't recognize it as breast or chest pain ,sometimes it is a very sharp pain ,I am confused that the pain is on my left breast or chest , the pain is constant . So please tell me if it is a breast pain or chest pain ,alongwith I feel pain on my back ,sometimes left arm . So is it normal to have pain as the pain is there from 4 to 5 days?