How soon after fertilization will you have tender breasts if at all?

Tenderness or soreness in the breasts (mastalgia) can be an early sign of pregnancy that starts around one or two weeks after fertilization takes place (even before a missed period) and might get noticeably more evident during the second half of a woman's menstrual cycle. However, breast tenderness is highly variable among pregnant women and not every woman experiences them in early pregnancy.