Pregnancy is the fertilization and development of one or more children, known as an embryo or fetus, in a woman's uterus. Pregnancy occurs when the egg released by the female reproductive organ is fertilized by the sperm of the male reproductive organ. Based on numerous studies conducted in the United States, it has been shown that approximately 10% of women between the ages of 15 and 44 have difficulty getting pregnant or, in other words, suffer from infertility. However, the development of medical technologies such as in vitro fertilization, surgery, and drugs to stimulate ovulation have the ability to overcome these problems (Simon, 2013). Even though there is a wide range of developments in the medical field nowadays, there are still some pregnant women who suffer due to pregnancy-related illnesses that result from inadequate prenatal care. Furthermore, clinically it has been said that pregnancy lasts 40 weeks, which is equivalent to nine months starting from the first day of the last normal period. Pregnancy occurs in certain stages which are first trimester, second trimester and third trimester (refer Figure 1 in Appendix 1). The first phase of pregnancy is the first trimester which includes the first 3 months or 12 weeks of pregnancy. This is the phase in which a woman confirms her pregnancy by taking a pregnancy test and based on physical changes and hormonal imbalances. One of the clear signs of pregnancy at this stage is the interruption of menstruation. On the other hand, some of the physical changes that can be clearly observed in this stage are a high degree of tiredness, breast enlargement, and breast tenderness (Heler & MD, 2002). Also a pregnant woman experiences a wide fluctuation of em... half the paper... still perfectly. In week 37 to 40, the baby already has perfect organs and all organs function well. Rogers (2006) stated that “development during the third trimester is significant, as the brain continues to grow” (p. 28). At this level, the baby's head is lowered as it reaches the last process before the mother gives birth. Even in the third trimester, ultrasound can be beneficial for the last stages of pregnancy. The presence of ultrasound allows the pregnant mother to identify the position of the baby. Berghella (2007) reported that “third trimester ultrasound may decrease the incidence of a growth-retarded child but increase the rate of iatrogenic interventions. There are no data on the potential psychological effects of routine ultrasound in late pregnancy and on the effects on both short- and long-term neonatal and infant outcomes” (p.. 27).