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When Does Ovulation Start?

Your menstrual cycle is made up of a number of different processes, driven by hormones released by the brain, and all focused on ovulation: either preparing for it, driving the moment itself or ensuring your body is ready to receive the resulting egg and nurture it into a foetus if it’s not fertilised. Your period is the dramatic result if that egg isn’t fertilised.

If you’re trying to get pregnant you need to know when ovulation starts in each cycle (the temptation is to say ‘each month’ but cycles can vary in length from 21 to 35 days, or be irregular, which makes tracking your ovulation even more important) so you can ensure you’re trying to conceive when you have the best chances of success.

Ovulation is a relatively swift process – it refers to the ejection of an egg (sometimes more than one) from your ovaries. Once ejected, that egg travels down the fallopian tubes and into the uterus – the journey is affected by whether or not the egg is fertilised. If your egg isn’t fertilised within the 24 hours it’s fertile for after ovulation, it passes straight through to the uterus and disintegrates, and your body begins preparations to shed the endometrial lining it’s developed in case the egg does get fertilised.

If your egg encounters active sperm during that twenty-four hours it remains in the fallopian tubes for longer, spending up to three or four days in its slow journey as it begins dividing into a ball of cells that will eventually become a foetus. The additional time before it passes into the uterus gives your body the chance to develop a thick, endometrial lining that the egg can embed into for a healthy pregnancy.

This key process starts, on average, two weeks after your last period ended. The key word there is ‘average’. There is no easy, one size fits all answer to the question ‘When do I start to ovulate?’. Some women have very regular cycles, but cycle length can vary from 21 days at the shortest to 35 at the longest, while other women have irregular cycles, and may have a very short one, followed by a 35 day wait for their next period. On top of that, even if your cycle is normally very regular, ovulation can be affected by illness, medication and even stress, so any individual month might not fit the pattern.

OvuSense can give you a definitive notification of when you start ovulating using your Basal Body Temperature. By measuring your core temperature through the night with a specialised sensor, and using a computer backed algorithm, we can turn that data into answers, and even a prediction that tells when you’re due to start ovulating next!

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