First day of last period
How Doctors Date Pregnancies, Explained

When a woman does not want to become a parent, her pregnancy options may include abortion or adoption Pregnancy is calculated from the first day of your last period, not from the date of conception Pregnancy is counted as 40 weeks, starting from the first day of the mother's last menstrual period All women experience pregnancy differently, and you will experience different symptoms at different stages of your pregnancy Some of the signs and symptoms of going into labour may include period-like cramps, backache, diarrhoea and contractions The odds of a young fertile couple conceiving by having sexual intercourse around the time of ovulation the release of the egg from the ovary are approximately one in five every month.

It also helps to know how pregnancy may affect your emotions and feelings Surrogacy is a form of assisted reproductive treatment ART in which a woman carries a child within her uterus on behalf of another person or couple All women should have access to accurate information about abortion so they can make their own informed decisions The odds of a young fertile couple conceiving by having sexual intercourse around the time of ovulation are approximately one in five every month Age affects the fertility of both men and women, and is the single biggest factor affecting a woman? A couple isn't suspected of fertility problems until they have tried and failed to conceive for one year Compared with women in the healthy weight range, women who are carrying extra weight are less likely to conceive Morning sickness is typically at its worst early in the day but it can strike at any point during the day or night Make sure your abdominal muscles have healed before you do any vigorous tummy exercises, such as crunches Some foods should be avoided during pregnancy as they carry bacteria that could harm your unborn baby Smoking while pregnant exposes a woman and her unborn child to an increased risk of health problems Finding out you are pregnant can be a very exciting time.

But it can also make you feel uncomfortable, unwell, worried and make you wonder how you are going to cope.

How Doctors Date Pregnancies, Explained

It's important to look after your teeth and gums when you're pregnant, as gum disease can affect your baby Pelvic floor exercises are designed to improve muscle tone and prevent the need for corrective surgery Travelling to developing nations is not encouraged during pregnancy, due to the risk of disease and the standard of medical facilities Listeria infection is uncommon but very dangerous for the elderly, people whose immune systems are not working properly and pregnant women and their unborn babies Placenta previa means the placenta has implanted at the bottom of the uterus, over the cervix or close by Placental abruption means the placenta has detached from the wall of the uterus, starving the baby of oxygen and nutrients There is no evidence that pre-eclampsia is caused by emotional stress, working too hard or not getting enough rest Lupus can be controlled with medications, so the majority of affected women are able to have children Women living with human immunodeficiency virus HIV , or women whose partner is HIV-positive, may wish to have children but feel concerned about the risk of transmission of the virus to themselves if Ectopic pregnancy is caused by a fertilised egg not being able to move through the fallopian tube An obstetric emergency may arise when a woman is pregnant, or during her delivery.

In this case, extra care is needed. A woman may need a lot of tests and treatments, and extended hospital stays. Postnatal depression can happen either a few days or weeks after the birth, with a slow or sudden onset Most molar pregnancies are diagnosed when bleeding early in pregnancy prompts an ultrasound scan Gestational diabetes is diabetes that occurs during pregnancy and usually disappears when the pregnancy is over Pregnant women with asthma need to continue to take their asthma medication as it is important to the health of both mother and baby that the mother's asthma is well managed The cause of birth defects is often unknown, speak to your GP if you are at increased risk of having a baby with a congenital anomaly Most women take a drug of some kind during pregnancy, sometimes without realising the potential for harm It's very important for you and your baby to be looked after from the start of your pregnancy until after the birth of your baby Multiple births are more common due to the advancing average age of mothers and the rise in assisted reproductive techniques Let your baby feed as much as they want in the first few days to help establish good breastfeeding patterns Breastfeeding within the first hour after birth allows your baby to behave instinctively and breastfeed with little intervention With low levels of vitamin K, some babies can have severe bleeding into the brain, causing significant brain damage Even if your baby furniture meets every safety standard and recommendation, your child still needs close supervision Every newborn baby in Australia is offered a newborn bloodspot screening test to identify those at risk of rare, but serious, medical conditions A range of tests is available to pregnant women to confirm pregnancy and monitor the baby's development in the womb Ultrasound is used during pregnancy to check the baby's development and to help pick up any abnormalities This page has been produced in consultation with and approved by: Better Health Channel - need new cp.

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How accurate are dating pregnancy tests

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Pregnancy testing Share show more. Healthy pregnancy Healthy pregnancy - Pregnancy and birth basics. Many women who use home pregnancy test kits get inaccurate results. Always see your doctor for confirmation of your pregnancy. This is a hormone made by the placenta. If you suspect you could be pregnant, you can see your doctor or family planning clinic for a pregnancy test. The doctor may perform a pregnancy test on your blood or urine.

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Alternatively, you could buy a home pregnancy test kit, which is available from pharmacists. However, always see your doctor for confirmation of pregnancy if you use a home kit. Blood pregnancy tests used by doctors Your doctor can give you a blood pregnancy test as early as 11—14 days after ovulation. To perform a blood pregnancy test, the doctor draws blood from a vein in your arm. This blood is sent to a laboratory for testing. The results of most blood pregnancy tests take at least a couple of days.

The laboratory then advises the doctor of the result. Blood test results are about 99 per cent accurate and can detect lower amounts of hCG than urine pregnancy tests. The two main types of blood pregnancy test include: Quantitative blood test — measures the exact amount of hCG in the blood and can give you an estimate of how far along the pregnancy has progressed. Qualitative blood test — only checks for the presence of hCG.

Urine pregnancy tests used by doctors The doctor can give you a urine pregnancy test. You are asked to urinate into a plastic cup or something similar. The doctor then tests the urine using a kit that may look similar to a home pregnancy test kit. Home pregnancy test kits Home pregnancy test kits are available from pharmacists. However, many women who use home pregnancy test kits get inaccurate results.

The most common mistake is to test for pregnancy too soon after the missed period. How to use a home pregnancy test kit Home pregnancy test kits vary in their sensitivity to hCG. Most test kits are best used about one to two weeks after your period was due. Generally speaking, most home pregnancy tests follow the same basic principles: You collect urine in a small container and dip the test strip into the urine.

Alternatively, some kits offer a test strip that you hold under your stream of urine. To improve accuracy of results, it is best to test your urine when you first get out of bed. Early morning urine is concentrated and contains higher levels of hCG than at other times of the day. It features the following important benefits:. Always read full instruction leaflet of product before use.

Why my pregnancy test result came negative?

This material is intended for healthcare professionals only. It is for general information only with no warranties, representations or undertakings, express or implied, and does not constitute medical advice. It may refer to products not yet registered or approved in a given country. Please ask your local pharmacist or SPD contact for products available in your country.

Product images are for illustration only. Pregnancy Tests Clearblue offers a range of pregnancy tests , all of which detect the clinically proven urinary pregnancy marker — human chorionic gonadotrophin hCG to provide accurate and trusted results.


Rescue of the corpus luteum in human pregnancy. Biol Reprod Feb;68 2: Gynecol Obstet Invest ;64 3: Urinary hCG patterns during the week following implantation. Hum Reprod Feb;23 2: Time of implantation of the conceptus and loss of pregnancy. N Engl J Med Jun 10; Plasma concentrations of human chorionic gonadotrophin from the time of implantation until the second week of pregnancy. Fertil Steril Jun;37 6: Hum Reprod May;7 5: