The phrase "an unborn, unconceived baby" can be somewhat confusing, as it seems to refer to a potential baby that has not yet been conceived. In human reproduction, a baby begins to develop only after fertilization occurs, which is the process where a sperm cell from a male merges with an egg cell from a female.
Sperm, which is produced in the male reproductive system, contains genetic material that can combine with an egg to create a new life. However, until fertilization happens, the sperm itself does not carry a developing baby; it simply carries genetic information that, when combined with an egg, can lead to conception and the eventual development of an embryo and, subsequently, a fetus.
In summary, there cannot be an "unborn, unconceived baby" living in a father's sperm, as sperm themselves are not babies; they are the male reproductive cells that can contribute to conception and the formation of a baby when they fertilize an egg.