The first step in using any fertility calculator based on ovulation dates is to chart the dates of your last few menstrual periods, according to WebMD. Note the date that you began menstruating on a calendar, and mark it... More » Health Women's Health

To use most period calculators, simply enter the date of your last menstrual period, how long your periods typically last and the length of your cycle, as evidenced by the period calculator created by Kotex. The calculat... More »

To determine the date of conception, use an online ovulation calculator found on WebMD or BabyMed. Alternatively, women can identify the last menstrual period that they have had and add 40 weeks to determine due date, wh... More » Health Women's Health Pregnancy

The most common cause for spotting and cramping after ovulation is implantation bleeding, or the process of a fertilized egg attaching itself to the wall of the uterus, according to WebMD. It can also signify pregnancy p... More »

You can determine a healthy weight for women over 40 with WebMD's BMI calculator. The calculator offers information on healthy weight and BMI levels based on your age and a number of other factors. More » Health Women's Health

Periods with lighter or heavier than usual bleeding, shorter or skipped periods, insomnia, heart palpitations and cognitive impairment such as memory problems are early signs of menopause, according to WebMD. Vaginal dry... More »

Physicians diagnose uterine fibroids by taking a history of symptoms and menstrual periods and performing a pelvic exam to assess the size of the uterus, according to WebMD. An ultrasound or other type of test may be ord... More » Health Women's Health