To get the best results from the calculator, enter the first days of your periods in the last three months in order. If you only remember your last menstrual period (SAT), enter this date below.:
The first day of your last period :
When you enter only one date (Last Menstruation Date), the calculator accepts your cycle every 28 days. Accordingly, the first day of your bleeding prior to your last menstrual period was probably on the following date :
The first day of your bleeding before the last menstrual period :
For an even more lifelike result, now if you remember change the following date as necessary :
The first day of your bleeding two days before your last menstrual period :
 
Approximate cycle time
Your next possible menstrual date
The days when you have the highest chance of conceiving and