In Pennsylvania, assault is a crime that can be a misdemeanor or a felony. A person commits an assault when he inflicts (or attempts to inflict) a physical injury on another person.
When measured from conception it is about 38 weeks. An embryo is the developing offspring during the first eight weeks following conception, after which, the term fetus is used until birth. Symptoms of early pregnancy may include missed periods, tender breasts, nausea and vomiting, hunger, and frequent urination. Pregnancy may be confirmed with a pregnancy test.
Conception typically occurs two weeks after your LMP. The due date is figured using your LMP, so is set 40 weeks after your LMP (2 weeks between LMP and conception + 38 weeks for development). As to why we always hear about babies being born after 9 months, I'm not sure about that either.