Cryos

Julie

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<p>During the first part of your menstrual cycle, one of your follicles develops into a mature egg. Between the 10th and 14th day of menstruation, the mature egg releases - this is ovulation. Once the egg is released, it is ready to be fertilized. Continue reading about ovulation and the menstrual cycle.</p>
<h2><span class="display-3">What is ovulation?</span></h2>
<p>The term ovulation means that a mature egg (in rare cases, more than one) has been released from your ovaries. After release, the egg moves down to the fallopian tubes, where it stays for 24 &ndash; 36 hours. During this period, the sperm cells can fertilize the egg. Sperm cells can live inside the female reproductive system for up to five days, which means that if you want to get pregnant, you should have intercourse in the days before or on the day of ovulation.</p>
<h2><span class="display-4">When does ovulation occur?</span></h2>
<p>Ovulation occurs approximately two weeks into your menstrual cycle and only happens once during every cycle. The ovulatory phase lasts about 5 days, in which the ovulation occurs. A menstrual cycle lasts about 28 &ndash; 32 days, the specific number of days varies from one woman to another. If you want to become pregnant, we recommend you start tracking your menstrual cycle and thereby learn more about your time of ovulation. You can track your ovulation by keeping a menstrual calendar.<br><br></p>

Facts

<h2><span class="display-3">Ovulation facts</span></h2>
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<li>Women are born with approximately 1 million follicles (pre-eggs)</li>
<li>Every month, between 10 and 20 follicles are released from the ovary but usually, only one follicle will develop into a mature egg</li>
<li>A mature egg lives between 12-24 hours after leaving the ovary</li>
<li>The menstrual cycle normally lasts between 28-32 days, but some women may have shorter or longer cycles</li>
<li>Ovulation might occur even if your period has not occurred and vice versa</li>
<li>Ovulation may occur on a different day each month and at different times during your cycle</li>
</ul>

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<h2><span class="display-3">Step-by-step guide on how ovulation works</span></h2>
<p>Ovulation is an important part of the menstrual cycle, and to understand how ovulation works you also need to understand how the menstrual cycle functions. The menstrual cycle can be divided into four phases, which are illustrated in the graphic below. It starts on the first day of your period and ends the day before your next period starts. The length of each phase differs from woman to woman and depends on the total length of the cycle.</p>
<h3><span class="text-theme-blue-700"><span class="display-4">Step 1 - The menstrual phase</span></span></h3>
<p>The cycle starts on the first day of your period, resulting from the previous cycle where the mature egg was not fertilised. This phase normally lasts around 4-7 days.</p>
<h3><span class="text-theme-blue-700 display-4">Step 2 - The follicular or pre-ovulatory phase</span></h3>
<p>This phase also begins on the first day of your period and normally lasts around 10-17 days. During these days, the level of your Follicle-stimulating hormone (FSH) increases, which triggers your follicles to develop into mature eggs. Usually, between 10 and 20 follicles are released during every cycle, but only one follicle will develop into a mature egg and be released. Before the egg is released, the uterine lining thickens to prepare for implanting the mature egg into the uterus.</p>

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<h3><span class="text-theme-blue-700 display-4">Step 3 - The ovulatory phase</span></h3>
<p>Ovulation occurs in the middle of the menstrual cycle in response to a peak in the oestrogen level, right when the follicular phase is over. The oestrogen level triggers a release of the Luteinizing Hormone, also called the&nbsp;<a href="/en-gb/dk-shop/private/faq/pregnancy/what-is-lh-surge/">LH surge</a>. This hormone helps the egg to push through the ovary wall and into the fallopian tube within 24 &ndash; 36 hours where it is available for fertilisation. This is the optimal time for <a href="/en-gb/dk-shop/private/blog/donor-insemination/">donor insemination</a>. If the egg is fertilised, it will stick to the uterine wall after a few days of transportation.</p>
<h3><span class="text-theme-blue-700 display-4">Step 4 - The luteal phase</span></h3>
<p>The luteal phase lasts approximately 14 days and is the last stage in the cycle until the next menstrual phase begins unless fertilisation occurs. It marks a decrease in the level of FSH and LH. If the egg has not been fertilised, the body will shed the thickened uterine lining, and the menstrual cycle will start over.</p>
<p>In fertility treatment, the fertility doctor needs to time the insemination with your ovulation, which means that the treatment will be synchronized with your menstrual cycle, or you will receive a trigger shot containing Luteinizing Hormone, which will kickstart your ovulation. It does not depend on whether you are using <a href="/en-gb/dk-shop/private/find-donor/search-sperm-donors/">sperm from a donor</a> or your partner. If you want to read more about different types of fertility treatments like <a href="/en-gb/dk-shop/private/faq/fertility-treatment/what-is-ici-treatment/">ICI</a>, <a href="/en-gb/dk-shop/private/blog/iui-with-donor-sperm/">IUI</a>, <a href="/en-gb/dk-shop/private/blog/ivf-with-donor-sperm/">IVF</a>, or <a href="/en-gb/dk-shop/private/blog/what-is-icsi-treatment-learn-how-it-works-step-by-step/">ICSI</a> then follow the links.</p>
<h3><span class="display-4">Articles related to ovulation</span></h3>
<ul>
<li><a href="/en-gb/dk-shop/private/blog/how-early-can-you-take-a-pregnancy-test/">How early can you take a pregnancy test?</a></li>
<li><a href="/en-gb/dk-shop/private/blog/signs-of-early-pregnancy/">10 signs of early pregnancy &ndash; read them here</a></li>
<li><a href="/en-gb/dk-shop/private/blog/what-to-do-during-the-two-week-wait/">What to do during the two-week wait</a></li>
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