Believe it or not, in addition to the day you actually ovulate, you’re most likely to get pregnant if you have sex in the five days or so before. Here’s why: Once the egg leaves your ovary, your guy’s sperm has about 12 to 24 hours to get to it for conception to happen. But sperm can actually remain viable inside you for several days or even weeks after you two actually get it on. So to put it bluntly, the more swimmers you’ve got in there ahead of time, the higher your odds are of making a baby. 
To get pregnant, you need to have sex on the days leading up to and around when you ovulate. The two to three days prior to Fertility treatment ovulation, and the day of ovulation itself, being your most fertile days. Once the egg has gone (usually within a day of Fertility ovulation) you cannot get pregnant until after your next menstrual cycle has started. So methods that tell you when you have ovulated are of no help if you are trying to conceive.
The average menstrual cycle is 28 days long, but every woman is unique and nearly 50% of women’s cycles vary by 7 days or more1.. As menstrual cycles vary in length, so does the timing of Fertility ovulation, so it can be difficult to know when YOUR fertile days are.
Tracking your basal body temperature is not recommended to help you get pregnant, since a woman’s body temperature rises AFTER she has ovulated by which time it is too late to optimise the chances of conception in that menstrual cycle.
Just because your hormones haven’t been affected by hormonal contraceptives doesn’t necessarily put you at an advantage. Your body may be better able to regulate itself but this doesn’t mean you can get pregnant any more easily. Your fertility center Ovulation can be influenced by many factors other than contraceptives.
There’s no sure way of knowing. You’ll be older, you’ll definitely have less time to be spontaneous with your sex life and you may even have a different partner all of these influence your chances of pregnancy. If you are under 35 and have been trying to get pregnant for a year, talk to your doctor (six months if you are over 35).
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