question: hi mam im 29 years married women,now we are planning for a baby,but my menstual cycle is irregular,according to my doctors order im taking tab. fertyl from my second day of cycle to 5 th day.usually my menstrual cycle duration is 35 to 40 day, so hw many days we need to do intercourse?from 10th day to 18 th day or 10 th day to 22 day(because my menstrual cycle duration is 35 to 40 days ) thank you.