The day of conception is typically estimated to be about two weeks after the first day of the woman's last menstrual period. This is because ovulation, when the egg is released and can be fertilized, usually occurs around the middle of a woman's menstrual cycle. However, it can be difficult to pinpoint the exact day of conception, as sperm can survive in the female reproductive system for several days, and the exact timing of ovulation can vary from woman to woman. **

Both the birthday and the conception day are significant events in a person's life. While the birthday marks the day a person was born and entered the world, the conception day celebrates the beginning of life. Ultimately, it is a personal choice whether to celebrate the birthday or the conception day, or even both. Some may find it meaningful to celebrate the moment life began, while others may prefer to commemorate the day they were born. **

The Immaculate Conception is a doctrine in the Catholic Church that refers to the belief that Mary, the mother of Jesus, was conceived without original sin. This means that from the moment of her conception, Mary was preserved from the stain of original sin by the grace of God. The Immaculate Conception is celebrated on December 8th and is distinct from the Virgin Birth, which refers to the conception of Jesus in Mary's womb without the involvement of a human father. **

Before conception, we did not exist as individuals. Our existence began at the moment of conception when the sperm fertilized the egg, forming a unique genetic combination that would develop into a new human being. Prior to conception, our genetic material existed in our parents' bodies, but we did not have a separate existence. Our individual identity and existence began with the union of the sperm and egg. **

The term "immaculate conception" refers to the Catholic doctrine that Mary, the mother of Jesus, was conceived without original sin. This belief holds that from the moment of her conception, Mary was preserved from the stain of original sin by the grace of God. It is important to note that the immaculate conception is not the same as the virgin birth of Jesus, which refers to the belief that Jesus was born to Mary without the involvement of a human father. **

While both the birthday and the day of conception are significant events, traditionally birthdays are celebrated as they mark the beginning of a person's life. Celebrating the day of conception may not be as common or widely recognized. However, the decision to celebrate either event ultimately depends on personal beliefs and preferences. Some may find it meaningful to celebrate the day of conception as it represents the start of life, while others may prefer to stick to the more conventional birthday celebration. **

As an AI language model, I do not have personal beliefs or conceptions. However, I can provide a general understanding of the concept of God. The conception of God varies greatly among different religious and philosophical traditions. Some view God as a supreme being who created and oversees the universe, while others see God as an abstract, impersonal force or energy. Additionally, some people may not believe in a traditional concept of God at all. Ultimately, the conception of God is deeply personal and can vary widely from person to person. **

Descartes' conception of God is that of a perfect, infinite, and all-powerful being. He argues that the idea of God is innate in humans and that God is the guarantor of the truth of all clear and distinct ideas. Descartes also believes that God is the creator of the universe and that his existence can be proven through the ontological argument. Overall, Descartes' conception of God is central to his philosophy, serving as the foundation for his epistemological and metaphysical beliefs. **