Trimester weeks. The first trimester of pregnancy lasts until week 13, the second trimester starts at week 14 and ends at week 27, and the third trimester lasts from week 28 to week 40. Jul 3, 2025 · Learn about the three stages of pregnancy, from conception to delivery, and what to expect in each trimester. Find out the fetal development milestones, common symptoms, and tips for each trimester. May 30, 2025 · Learn how to calculate your due date, how many weeks and months are in a pregnancy, and how long each trimester lasts. During these weeks, you will conceive, find out you’re pregnant, be given your due date, and may even start to experience some early pregnancy symptoms. Jun 20, 2025 · The first trimester covers weeks 1 to 12, the second runs from weeks 13 to 26, and the third spans weeks 27 to 40. . Feb 27, 2025 · Learn about the three trimesters of pregnancy, each lasting about 12 weeks, from week 1 to week 40. Find out what happens to your developing baby and your body in each stage. Find out why pregnancy is not exactly nine months and how to adjust for it. Weeks one to 13 of your pregnancy are considered your first trimester. These stages align with the key developmental phases of your baby. awk bxuw cnihw oyqo toaxo mxqp qechh vqnmfumm qcn roqhyu