Baby's arms, hands and toes are fully formed and it can open and close its fists and mouth. Fingernails, teeth and ears are forming. Baby's gender may still be difficult to distinguish but he/she is fully formed. All organs and estremities along with it circulatory system and the liver are functional. At the end of month 3, baby is about 4 inches long and weighs an ounce. Chances of carrying to term are very good at this point in pregnancy.