Question: how much is 15 weeks in pregnancy?
Answer: At 15 weeks pregnant, baby is as big as a navel orange. The average 15-week fetus weighs 2.5 ounces and measures 4 inches—and baby's proportions are becoming even more normal, since their legs now out-measure their arms. 15 Weeks Pregnant Is How Many Months? When you're 15 weeks pregnant, you're three months pregnant.