By pregnancy week 18 the infant's heart is getting developed enough that shows some signs of defects. Ultrasound might be used to help detecting any structural anomalies that might exist. Most of the infants will be born without any congenital deformities. If an early ultrasound detects something abnormal, parents can plan further for any interventions or surgeries that might be necessary supporting the newborn child after birth. At pregnancy week 18, the infant is now beginning to produce protecting covering along the nerves, medically known as Myelin.
Myelin is the substance is produced throughout the ninth month and by now; the infant's genitals must have been distinguishable, though she might not still have the chance to view them at the health care provider's clinic. The mother must be able to feel her uterus now just below the umbilicus. The mother must definitely be showing her abdomen little by now.
Most of the expecting mothers might have gained anywhere from 10-15 lbs at this point of time, although some might have got less or more. The uterus is now getting size of a small melon at this juncture. Sleeping for mother, may start getting a bit more uncomfortable as her abdomen continues to expand during her gestational period eighteen weeks and further. One of the best things the mother could do during her pregnancy is lying on her left side, especially during the 3rd trimester. This helps preventing the uterus from getting compressed a vein in the body known as the inferior vena cava. This vein carries the blood that is returning back to the heart and if mother hasn't invested in a whole body pillow at this time, she should take that one soon.
Most of the expecting mothers will undergo some ultrasounds sometime between 18 week pregnancy and 20 week pregnancy. An ultrasound is typically prescribed to help detecting any birth defects and ensuring that the infant is developing properly. The health care provider examines mother’s body and also infant's placenta and umbilical cord and also finds out whether or not the expected delivery date (EDD) mother has estimated is supposed to be correct or not. Many of the expecting mothers have their husbands joining them during this ultrasound visit so they can be delighted with the experience of viewing the miniature of human being altogether.
During pregnancy week 18, one can find out what the gender of the infant is going to be. The parents might be able to determine the gender when the pregnant woman is in pregnancy at 18th week or higher. Most of the parents have dispute on this issue as some can not wait finding out what the gender of their unborn is, and others may like to be surprised at birth; whatever, the decision they make must be theirs entirely. In many countries, now sex determination is prohibited due to social culture of killing or terminating the female babies.
However, one should keep in mind that while typical very accurate, ultrasound may sometimes get you to mislead. There is a little chance that the technician may believe the baby is a girl, while in reality, it is a baby boy! More than one parent might have been surprised in the past by somewhat incorrect ultrasound. Nevertheless, by and large by this juncture of time, most of the ultrasounds are more than 90% accurate. Just it is to be assured that the mother doesn't decorate the nursery totally if the radiologist is not 100 percent confirmed of the gender of the unborn. An amniocentesis is the only proven technique for determining the gender of the unborn, other than delivery itself!
