This Pregnancy Tracker Board 8.5”. 37 Pieces are included with the sign so you can update it every week starting at week 4 of pregnancy. Each piece includes the size of the baby, as well as a fun fact about the baby’s progress. It’s a beautiful and exciting way to keep track of the progress of your pregnancy. From pea pod to squash, these pieces cover the entire growth of your baby from 4 weeks to 40. And the facts about each phase of the pregnancy are a lot of fun!