Ovulation Calendar Express 2.0

The Ovulation Calendar Express helps you determine your fertile days of the month, so you can either achieve or avoid pregnancy. The calendar is based on the date of your last period, the average Period Length and the Luteal Phase.
The options to modify are:
- Last Period Date: Date on which your last period occurred.
- Period Length: Number of days since the start of your last period (first day of bleeding) up to and including the day before your next period. The default value is 28 days, which is common between women.
- Luteal Phase: Also know as Days Past Ovulation (DPA). It is the number of days after you ovulate up to the next period. For most women, this is usually 14 days.