Hi Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concern... The most common hormonal breast soreness comes from an increase in the level of oestrogen before a period. This causes milk ducts and glands to swell, trapping fluid in the breasts. Most women have tenderness up to a period and in some woman it can be right through it. Usually the condition goes away in time. Other common reasons for soreness in one or both breasts are wearing a bra that doesn’t fit, stress, consuming a lot of caffeine ( coffee, tea , cola), intake of hormonal contraceptives etc. If you continue to have breat tenderness, along with missed period blood test for Beta HCG is advised. Refer to a gynaecologist Hope this information helps