OvuSense logo

How do You Know When You're Fertile?

Getting pregnant isn’t always as easy as you’d like it to be. For all the effort that goes into making sure you don’t get pregnant when you don’t want to, when the time is right you might find that conceiving requires as much effort.

One of the most important things you can do is find out when you’re fertile. This isn’t a fixed value: for men fertility trends down slowly across the course of their life, while women experience a similar trend across time, their fertility also experiences dips and peaks across the course of their menstrual cycle.

Learning when peak fertility falls for you is an important challenge to face – it can boost your chances of conceiving dramatically if you know when you should be trying. Knowing when you’re going to be fertile could be the key that unlocks pregnancy for you, but it’s not an easy thing to find out. You need to begin by tracking when you ovulate: it’s in the run up to and immediate aftermath of ovulation that you’re at your most fertile. It’s the time when the average lifespan of both eggs and sperm can overlap, meaning they stand an increased chance of actually encountering each other, resulting in fertilisation and then pregnancy.

Ovulation, unfortunately, doesn’t show on the ‘surface’ of your body especially clearly. Your period is the most ‘visible’ event of the menstrual cycle. To find when you’re going to ovulate, or even confirm if you are ovulating there and then, you need specialist equipment.

Hormone tests, known as OPKs can tell you when you’re ovulating by looking for the tell-tale surge of Luteinising Hormone in your urine. This is the hormone your body uses to cue your ovaries to release a matured, fertile egg, and when the level in your body peaks it’s a clear marker that you’re ovulating. Unfortunately, while these tests are relatively easy to use, they aren’t always 100% effective. Use them at the wrong time of day and you might miss the hormone surge that tells you you’re ovulating; if you have a naturally high or low level of Luteinising Hormone then it could give you a false positive or false negative result and most seriously, if you have a hormone based condition like PCOS, then it becomes near impossible for it to give you an accurate answer.

Measuring your basal body temperature gives you a more accurate answer which is why OvuSense uses this method. It’s not as easy as an OPK but our system takes some of burden off your shoulders. Our specialised sensor takes your temperature overnight, and then processes the results into a prediction of the next time you’ll be at your most fertile!

Find out more about core temperature technology and fertility here