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I can give an "estimate" but I really don't know because I never keep track.(Plus I have always been told that because of metabolic issues, and PCOS that it would be very hard for me to get pregnant).At around seven weeks of pregnancy, it’s reasonably common for women to have their first ultrasound.This can be for many reasons but the most common is to confirm pregnancy and to check that the embryo is viable and “everything’s ok”.Obstetric ultrasonography is the use of medical ultrasonography in pregnancy, in which sound waves are used to create real-time visual images of the developing embryo or fetus in its mother's uterus (womb).The procedure is a standard part of prenatal care in many countries, as it can provide a variety of information about the health of the mother, the timing and progress of the pregnancy, and the health and development of the embryo or fetus.Ultrasound scans are considered to be the most cost-effective, accurate and safe methods for measurement of various fetal parts in pregnant women.

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This work is licensed under the Creative Commons Attribution International License (CC BY). Received 27 June 2014; revised 28 July 2014; accepted 28 August 2014ABSTRACTRapid and accurate determination of gestational age (GA) may be vital to the appropriate care of the critically ill pregnant patient and improve obstetric care through allowing the optimal timing of necessary interventions and the avoidance of unnecessary ones.

The bright white circle center-right is the head, which faces to the left.

Features include the forehead at 10 o'clock, the left ear toward the center at 7 o'clock and the right hand covering the eyes at .

In normal state, each body tissue type, such as liver, spleen or kidney, has a unique echogenicity.

Fortunately, gestational sac, yolk sac and embryo are surrounded by hyperechoic (brighter) body tissues.