1. Preparation before conception Pregnancy is a complex process that requires adequate preparation before conception. First, women need to maintain good physical health, including good nutrition and appropriate exercise. Secondly, women need to understand their menstrual cycle and determine when they ovulate. Finally, couples need to undergo a comprehensive physical exam to ensure good health. 2. The process of conception The process of pregnancy begins with the union of sperm and egg. When a man ejaculates, millions of sperm enter the female reproductive tract. However, only the strongest and healthiest sperm can reach the egg,