trouble an effort that is inconvenient; "I went to a lot of trouble"; "he won without any trouble"; "had difficulty walking"; "finished the test only with great difficulty"
placenta previa pregnancy in which the placenta is implanted in the lower part of the uterus (instead of the upper part); can cause bleeding late in pregnancy; delivery by cesarean section may be necessary
maternity -
the quality of having or showing the tenderness and warmth and affection of or befitting a mother; "the girl's motherliness made her invaluable in caring for the children"
Maternity or motherhood is the social and legal acknowledgment of the parental relationship between a mother and her child. It is specially related with the protection of the baby and the mother within and after the childbirth.
OmegaWiki Dictionary
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maternity The feelings and needs felt by a mother for her offspring.