According to the American Pregnancy Association, a woman ovulates between day 11 and day 21 of her menstrual cycle. The days of a woman's period are included in this count. The day that a woman ovulates depends on the le... More »

A woman is most likely to get pregnant seven to 10 days after her period ends, notes WebMD. This is the time period when ovulation typically occurs. However, this time period can vary. More »

Women do not typically get pregnant immediately after their period. According to the American Pregnancy Association, in order to get pregnant, a women must ovulate. Ovulation occurs at some point between days 11 and 21 f... More »

A woman can use a calendar to track her menstrual cycle by marking or circling each date of her period on the calendar, starting from the first day of the period, explains GirlsHealth.gov. She can count her full cycle fr... More »

A menstrual period that only lasts a single day is not normal or common, but every woman's cycle is different, explains Mayo Clinic. Women should closely monitor their start date, end date, flow and pain levels each mont... More »

Black period blood is usually just a sign that old blood is leaving the uterus toward the end of a woman's menstrual cycle, according to WebMD. It is likely not a cause for concern but can indicate in some cases that a w... More »

The most common reason for having two periods in one month is when a woman has a short cycle and one period occurs at the beginning of the month, and then about 24 days later, another occurs at the end of the month, acco... More »