Sore breasts all month, had miscarriage 2 months ago. did have first period this month,but nipples are puffy all month , not late on this period yet?

Breast pain: Breast pain can be caused by weight gain, dietary changes, poor fitting bras, changes in exercise patterns, hormonal changes, breast cysts, fibrocystic changes and other causes. Schedule a visit for a breast exam. If you think you might be pregnant check then check a home pregnancy test. They are cheap, reliable and available at any pharmacy.