If you have only just started trying, a dose of realistic expectation goes a long way. Conception is partly a numbers game, and how long it takes swings widely from one couple to the next.
The realistic odds, month by month and year by year
For a healthy couple in their twenties to early thirties having regular unprotected sex, the chance of conceiving in any one cycle sits around 15 to 25%. It stacks up over time, though: roughly 8 in 10 couples conceive within a year, and about 9 in 10 within two. So a few months of trying is par for the course, not a warning sign.
What moves the timeline
- Age: fertility tapers off gradually, and more noticeably from the mid-thirties.
- Timing: hitting the fertile window matters more than anything else, and the ovulation calculator helps you find it.
- Cycle regularity: when cycles are all over the place, pinning down ovulation gets harder.
- Overall health, including things like smoking and weight.
How to nudge the odds up
Timing is the biggest lever by far. Aim for regular sex right across the fertile window, the five days before ovulation plus ovulation day. Tracking your cycle with the period predictor and sketching likely conception timing with the conception date calculator helps you focus on the days that count. A healthy routine and folic acid before you conceive are worth starting too.
When to get it checked
It is reasonable to ask for a fertility check after 12 months of trying if you are under 35, or after 6 months once you are 35 or older. Go sooner if your periods are very irregular or absent, you have a known reproductive condition, or something just feels off.