Pregnancy proves to be a period of anxiety and some confusion for most expectant mothers. However, by using a pregnancy calendar, you can avoid the usual apprehensions that most mothers face. Such a calendar helps you easily track the degree of fetal development that has taken place on a weekly basis.

Normally, a pregnancy calendar has a total of 42 weeks. Week 28 is considered as the onset of a very crucial period, as it is indicative of the second trimester concluding and the onset of the third trimester. Under usual circumstances, a baby should now measure about 14 to 15 inches. During this stage of pregnancy, it becomes imperative to get an ultrasound done to ensure that the baby weighs up to the expected level.