Fetal bud size and gestational age comparison chart explains in detail that pregnant women will experience the development and growth of the fetal bud during pregnancy, and there is a great relationship between fetal bud size and gestational age. Understanding the comparison chart of fetal bud size and gestational age can help you better understand the growth of your fetus. The following is a detailed explanation of the comparison table between fetal bud size and gestational age from four aspects. Basic introduction to fetal bud size and gestational age chart