Nihongosoumatome Mondaisyuu 2kyuu Dokkaihen/ 佐々木 仁子、松本 紀子. 日本語総まとめ問題集2級[読解編]

Do self-checks. Do regular self-examinations of your breasts. Most partners are more than happy to help, not just because breast cancer is the most common cancer among women. The best time to examine your breasts is in the week after your period.