Oh no, really? Yep, it sounds obvious doesn't it - but having sex regularly is critical to getting pregnant - funny that.
So how often should you be doing the deed and how many times do you need to do it before you can test positive for pregnancy?
According to a survey by First Response the average couple will have to have sex a total of 104 times before falling pregnant. Dr. Mike Smith of First Response said: "Having sex 104 times before falling pregnant does sound rather a lot, but as they say practice makes perfect. Trying for a baby is a very exciting time for a couple and many try to have sex at every opportunity in order to get pregnant."
Of course if you are going to have sex 104 times it's probably a good idea to spread this across the course of a few months, for example having sex two to three times a week, every week, to boost your chances of having a baby.
There are all sorts of ovulation calendars, charts and conception planners available for you to have fun with, but these can often stress couples out as they put pressure on you both to make love at very precise times.
And don't forget, once you've had sex stay lying down and rather than make a run for the bathroom or the shower, try a post coital cuddle - it'll make you feel all lovely and crucially will keep your partners sperm inside you for longer.