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 29 of 36 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 29 Week 33: a Paper Grocery Bag At 17.2 inches, your baby is about as long as a paper grocery bag is tall. Previous Next Start Slideshow Pregnancy