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When Do I Ovulate?

This is the question everyone who’s to trying to get pregnant should be asking, as the answer is the key to a successful conception!

Ovulation is the anchoring point of your fertility and the keystone of your monthly menstrual cycle – it’s the big event your body prepares for and recovers from in each cycle, and you can only get pregnant if you’re trying at the right time, as dictated by when you ovulate. You need to make sure you’re synchronising your attempts to get pregnant with the time you ovulate, as conception can only happen when sperm meet a fertile egg. This gives you a five to six day window, with the last 24 hours starting when you actually ovulate, as longer lived sperm endure to wait for an egg with a lifetime of 12-24 hours to be released.

So, if you’re asking ‘when do I ovulate?’ there are two answers. There’s the biological answer and the one that’s personal to you.


Ovulation is the fulcrum of your menstrual cycle. It begins with your period, which normally lasts between one and five days, but in the background, while this dramatic process is happening, your body is also preparing an egg to be released. In the ‘follicular phase’ hormones from the hypothalamus cue the development of up to 20 follicles – tiny sacs containing one immature egg each. They mature for up to 27 days at the longest, though for most people this phase lasts 16 days, in the course of which one egg becomes dominant, which suppresses the development of the others and it is released into your fallopian tubes to be inseminated!


There is an idealised, average rhythm to this cycle, but it’s rare for every woman’s body to work according to this average every cycle. Some people have naturally longer or shorter cycles, and some people’s cycles can vary, making them difficult to predict. These are not themselves indications of medical issues, merely the great variety of the human body!

There also are medical conditions, like polycystic ovary syndrome that can have a serious effect on your menstrual cycle and ovulation. Stress can also disrupt this process, as it too is expressed in the hypothalamus.

If your cycle is irregular it can be difficult to find the time when you ovulate, and therefore when you can actually get pregnant. Fortunately, there are reliable ways to identify this key event in your body. OvuSense monitors your basal body temperature, and uses the subtle peaks and troughs it goes through to give you 24 hour advance notice of your ovulation 96% of the time, so however irregular your cycle is, you get that vital information in time to capitalise on it.

To learn more about your cycle and hear from Ovusense customers visit ovusense