You can get a wider fertility window if you use an ovulation test that also detects estradiol (a form of estrogen). The more you know about your cycle, the easier it will be to know your fertile window. Use our ovulation calculator to get an approximation for when you ovulate.
An ovulation test measures the surge of luteinising hormone (LH), which happens just 24-36 hours before ovulation, so you can accurately identify your 2 most fertile days. This is the day before ovulation and the day ovulation takes place. The 2 most fertile days during this 6-day fertility window are known as peak fertility days. Your fertility window is the number of days that the egg and sperm can survive and this is usually around 6 days. Sperm can survive in your body for up to 5 days after intercourse, so you can conceive even if you have sex 4 or 5 days before ovulation. The good news is you have more fertile days when you can get pregnant since the chance of conception doesn’t just depend on the lifetime of the egg, but also on the lifetime of the sperm. These calculators work by taking the first day of your last period and the length of your menstrual cycle to give a range of days when you may release an egg.Īfter an egg is released, it only survives for up to 24 hours, so knowing when you ovulate gives you a very narrow fertility time window for intercourse. An ovulation calculator provides an estimate of how likely you are to ovulate on certain days in your cycle and can help you identify your most fertile days. When an ovary releases an egg this is known as ovulation and this happens once during your menstrual cycle. A fertility calendar tells you the days on which you’re more likely to conceive if you have sex.
Why is an ovulation calculator different to a fertility calendar?Īn ovulation calculator estimates how likely you are to release an egg on a particular day in your menstrual cycle. If you are trying to conceive then try to have intercourse at least every other day around the time of ovulation. With couples who have frequent (daily) intercourse, the man will have a lower sperm count per ejaculation but the sperm will be more fertile. Sperm that are stored within the testicles for too long accumulate damage to the DNA and are less fertile. It will either be a dating scan or the nuchal translucency (NT) scan, and gives you a more accurate due date, based on the size and development of your baby.Should we have intercourse every day I am fertile? Your first pregnancy scan will probably happen when you're between 10 weeks and 14 weeks pregnant. Will my due date change when I have a scan? Knowing this can help you to be prepared for labour and birth, and to have everything ready for your new baby. In fact, only about four per cent of babies are born on their due date! But it's likely that your baby will arrive in the few weeks either side of your estimated due date. Unfortunately, no one can say for sure exactly when your baby will arrive. Will my baby definitely be born on my due date? Our calculator uses this information to give you an estimated due date. The average pregnancy lasts between 37 weeks and 42 weeks. Most people will ovulate about two weeks before the first day of their period, and conceive shortly afterwards. That's why your due date is calculated based on the date of your last period instead. Unless you've been tracking your ovulation, there's no way to know for sure exactly when you ovulated and conceived. Have you tried adding, subtracting, multiplying and counting on your fingers? Find out when your baby is due with our handy pregnancy calculator.
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