Popsugar Parenting Pregnancy How Big Is My Baby? A Week-by-Week Fetus-Size Guide Based on Objects You Actually Know 8 June 2018 by Annie Gabillet View On One Page Photo 34 of 36 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 34 Week 38: a Herschel Backpack Your baby is as tall as a Herschel backpack, measuring 19.61 inches. You'll be carrying more than that soon. Previous Next Start Slideshow Pregnancy