"The State does not require that a pregnant woman with a history of spontaneous abortion go into seclusion in an attempt to save the pregnancy. No pregnant woman having knowingly engaged in conduct which she reasonably could have foreseen would result in injury to the fetus (such as skiing in late pregnancy) has ever been charged with negligent homicide. No formalities of death are observed regarding a fetus of less than five months gestation. Property rights are contingent upon being born alive. There has never been a tort recovery in Texas as the result of injury to a fetus not born alive. No benefits are given prior to birth in situations, such as workman’s compensation, where benefits are normally allowed for “children.”"