Standard Days Method. A woman uses a string of colored beads to know the days she can get pregnant. On the days she can get pregnant, she uses a condom or does not have sexual intercourse.
Amayi amagwiritsa ntchito chingwe cha mikanda ya mitundu yosiyanasiyana kuti adziwe masiku otenga pathupi. M'masiku oti angatenge pathupi amagwiritsa ntchito condom kapena sagonana nkomwe.