Breast are very sensitive and brownish discharge?

Need to be checked: Are you breast feeding? Is it happening in both breast or just one? Does it happen only during your period?are your breast tender? any fevers?palpable masses? "brownish" breast/nipple discharge is not normal and you need to see your primary care provider or OB/GYN to examine you.

Strange Discharge: Strange breast discharge can be a very minor problem especially if from both breasts - but it is worth seeing MD since it can be a hormonal problem originating from a pituitary (brain) problem or female organs (pregnancy?). Typically nothing to worry about but worth and MD visit.