Pregnancy

Planning to get pregnant? Use our ovulation predictor to determine the time in your menstrual cycle that you are ovulating. The tool will predict your most fertile days, plus calculate your approximate due date if you do conceive in this cycle.

Simply enter the first day of your last period plus the usual length of your menstrual cycle (the number of days until your period starts again), and hit ‘submit’.

First day of your last menstrual period:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 / January February March April May June July August September October November December / 2004 2005 2006 2007 2008 2009 2010

Usual number of days in your cycle:

20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45