Contractions - the tightening of muscles , Sexual Intercourse - when the male's penis enters the females vagina. only from Intercourse that can lead to pregnancy., Menstrual Cycle - the menstrual cycle is the monthly cycle that involves changes in the uterine lining, ovulation, and menstruation/ , Delivery - the process of a baby being born , Healthy Relationship - is in which you give a receive respect and support. you do not feel pressured to do something you do not want to do, Childbirth - begins when labor starts , Labor - the process by which the baby leaves the uterus , Blastocyst   - diving cells , Placenta - vital organ that gives baby food and oxygen ,

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