According to NHS Choices, roughly 84 per cent of people will conceive within one year if they do not use contraception and have sex regularly. What's more, of those who don't conceive in these first 12 months, about half will do so in the next year, so the great majority of people won't have to worry about fertility treatments to have a child.
The most important thing to remember is not to put too much pressure on yourself and instead to focus on having lots of sex and enjoying it, so in the first instance you may not want to worry about fertility timetables or planning your sex sessions.
Guidance from NICE says that for the best chances of conception you should be aiming to have sex every two to three days throughout the month.
However, if you've been trying to conceive for a few months, you may want to start thinking a bit more carefully about how to maximising your chances of getting pregnant by using a simple timing technique.
You are most likely to conceive if you have a sex a day or so following ovulation, as this is when you're releasing an egg, and this will usually happen 14 days after the first day of your last period, so it can help to make sure you're having plenty of sex at this time.