VERY SHALLOW!
Mimi naelewa menstural cycle vizuri.
Naelewa lini mke wangu anaweza kupata mimba.
Danger days ni btn 10th and 18th day.
*10th-13th, sperms can wait until ovulation day 14.
*15th-18th ovules can wait for sperms.
Sasa niambie, how does expiry time come in,
IF YOU DO IT ON THE OVULATION DAY (14th day)?