Lack of energy, always tired, moving sensation in right breast, prickly feeling and pain in breast and armpit what can be wrong?

Breast: Although breast cancer is uncommon in a 26 year old woman, this certainly must be considered in light of a breast lump and discharge. Other possible causes are breast pain that comes and goes with the monthly cycle, large breasts that pull on the ligaments of the breasts or even chest wall muscle pain. Chest wall pain is often 1-sided, burning and occurs from overuse of those muscles.