This document summarizes fetal development from conception through the first 12 weeks of pregnancy. It describes the key physical changes that occur each week, including fertilization, implantation, formation of major organs, development of fingers and toes, movement beginning, sex becoming apparent, and fingernails and toenails appearing. Regular prenatal checkups are recommended to monitor the health of the mother and developing baby. Common symptoms and emotions experienced in the first trimester are also outlined.

1. PREGNANCY

11. 5 weeks - Heart begins to beat

14. 6 weeks - Neutral tube closes

17. 7 weeks - Umbilical cord appears

21. 9 weeks - movement begins

24. 10 weeks - neurons multiply

26. 11 weeks - sex apparent

49. 15 weeks - skin begins to form

52. 16 weeks - facial expressions are possible

61. 23 weeks - lungs prepare for life outside the womb

72. Ultrasound scan

73. Doppler scan