Find out what to expect at your first and second trimester ultrasound appointments, what you can learn from those ultrasounds, and why you might need an ultrasound or a few in the third trimester. Relax -- You don't have to brace for needles when you get this painless test.
If not, there will be moments when they may ask you to close your eyes. My first three ultrasounds were administered in Rome, Italy, where the tech spoke English as a third language.
Since ultrasound can be off by as much as 20 percent in either direction, physicians will also use a tape measure and their hands to estimate the baby's weight. Ultrasound is also more accurate in the first trimester than in the third.
Your doctor works for you. Instead of rushing to make an appointment the minute you realize you missed your period, take a drug-store pregnancy test first.
When a mother has been experiencing blood loss, the ultrasound can identify the cause and source of the bleeding. Confirm the presence of a heartbeat.
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