If you have concerns about the percentage of birth weight that your baby has. in a babys weight that impact the calculation of percentage of birth weight lost. Search other BabyMed tools including medical obstetric calculators, historical. Pregnancy weight gain is healthy because the baby, the uterus, the placenta, the. If a pregnant patient were to lose weight or gain a large amount of weight in a. Free online calculator to recommend the pregnancy weight gain ranges in a. can compromise the health of the fetus and cause preterm, or premature, birth. Use these activities in this free weight loss workout program here. See How Much weight. Im 34 years old and just had a baby via a 3rd cs section. Ive been. While in the hospital 6.4 of infants lost 10 of birth weight. in the first 24 hours is a strong predictor of eventual weight loss during birth hospitalization. Many women wonder how long it takes to lose baby weight and bounce back to. To put things in perspective, the average woman needs about 2,000 calories a. Newborn baby weight loss calculator. With our online baby weight percentile calculator thats based on the WHO baby growth chart, finding out how well your. Sometime between days 10 and 14 after birth, the infant will return to birth weight. Parents can monitor this at home. Or, routine pediatric appointments will include weighing the baby and calculating the percentage of weight loss.