People may think your baby is delayed for a 4-month-old, for example, when, in fact, she is on target for a baby with a corrected age of 2 months. The fetal period is a time of extensive growth in size. To see other images from this early fetal stage see Category:Week 10. This stage of development is after the embryonic period (up to week 8), but only 2 weeks into early fetal development. Parents are often frustrated by well-meaning family and friends who express concerns about their baby's development. This page is a link to images from a 10 week female fetus approximately 40 mm in size. Your baby may just be beginning to hold her head up and smile, which is developmentally normal for a term baby of 2 months and, therefore, for a preterm baby whose corrected age is 2 months. It would be unrealistic to expect your baby to be ready to roll from her stomach to her back-a skill that often develops in term babies around the age of 4 months. In this case, even if your baby is 4 months old, you should expect her to have the developmental skills of a 2-month-old term baby. (Length: 2.3cm, head to bottom.) Find out more about your babys development this week. If she is now 4 months old (16 weeks since birth), her corrected age is 2 months. Your baby is around the same size as a grape and weighs 2g. If your baby was born at 32 weeks' gestation, she was 8 weeks (2 months) preterm. To determine the number of weeks' preterm your baby was at birth, subtract gestational age at birth from 40. (A pregnancy is now considered "full term" at 39 weeks.) Calculating corrected age isn't difficult.īegin with your baby's actual age in weeks (number of weeks since the date of birth) and then subtract the number of weeks your baby was preterm. On average, a baby at this stage is about 18. By looking at the difference between them, you can adjust your baby's calendar age to account for prematurity and calculate his or her corrected age.ĭuring the first 2 years, using your baby's corrected age will give you a better idea when he or she should reach common developmental goals. So your babys overall rate of growth is as important as the actual size. When you measure your baby's development-that is, when you look at what is "normal" for your baby's age-consider both of those dates. If your baby was born early, you have 2 important days to mark on the calendar: the day your baby was born and your estimated due date.
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