Your doctor may request this ultrasound for a number of reasons, including: Your doctor may have concerns that your pregnancy is located in the fallopian tube ectopic pregnancy. First trimester ultrasound screening is effective in reducing postterm labor induction rates: You may be asked to drink some water and not go to the toilet beforehand because a full bladder helps to push your womb up to give a better picture. For instance, one study found a reduction in the need for postterm inductions in a group of women randomized to receive routine first-trimester ultrasonography compared with women who received only second-trimester ultrasonography 5. Opens in a new window.
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Ultrasound Accuracy for Predicting Due Dates
You may have simply conceived earlier or later than you thought you did which can happen if your cycle is at all irregular or if you remembered your last menstrual period date incorrectly. Ultrasound scansusehigh-frequency soundwaves to create moving images of the baby, shown on a screen. At weeks gestation, a small gestation pregnancy sac is seen within the uterus. All transvaginal probes have been cleaned and sterilised according to recommended protocols. Assess the location of the pregnancy. Routine tests Pregnancy tests Prenatal genetic screening Hepatitis B screening HIV screening Vaccination Routine ultrasound Non-medical ultrasound Glucose testing — screening for gestational Diabetes Rh blood groups Group B Streptococcus screening Healthy pregnancy Announcing your pregnancy Symptoms of pregnancy Due date calculator Exercise during pregnancy Folic acid Healthy eating Fetal movement and kick counts Medications and drugs during pregnancy Substance use in pregnancy Mental health during pregnancy Nausea and vomiting Sex and pregnancy Weight gain during pregnancy Working during pregnancy Preparing for delivery Prenatal classes and preparing for delivery Birth plan Childproofing and creating an environmentally friendly home Doulas What to pack Special considerations Adolescent pregnancy Cancer during pregnancy Miscarriage Multiple pregnancy Obesity in pregnancy Overdue pregnancy Travel and pregnancy Gestational hypertension Unintended pregnancy.