In the first trimester, your body begins a remarkable transformation to support new life. This period, covering weeks 1-12, includes conception, implantation, and the initial stages of your baby’s development. During this time, essential organs, the neural tube, and the heart begin to form, making it a crucial phase for fetal development. You might start experiencing symptoms like nausea, fatigue, and breast tenderness due to hormonal shifts, especially the rise in hCG and progesterone.
By the end of the first trimester, your baby is fully formed with fingers, toes, and even tiny facial features, though they're still too small to detect any movement. While physical changes may be subtle, internally, your body is working tirelessly to lay the groundwork for a healthy pregnancy. It’s essential to rest, stay hydrated, and follow up with prenatal care to support this rapid stage of growth