Trimester/month/week chart - It is completely NORMAL to give birth anywhere from 37-42 weeks. My midwife has even had two 43+ week pregnancies. My body also 'cooks longer' Just know EVERY WOMAN and EVERY PREGNANCY is different. 41.6 weeks is actually the mathematical average. :)
A greytone chart with first trimester, second trimester, and third trimester of pregnancy broken down into months and weeks. Coordinates w/ daisy chain strips also posted for siblings / family members to count up or down to Baby and with a fruit and vegetable baby size comparison chart in grey/gray.