Premama Calendar Description Premama Calendar is the application for all women who are pregnant! Entering and saving the last period and the expected delivery date, the calendar changes in color pink and pastel blue every 28days. (It is calculated 28days as a month of pregnancy.) Dotted line and number shows which week of pregnancy you are at. The remaining days until the delivery appears on the top-right of the calendar. When you save the next checkup date, the hospital icon appears automa