'Pregnant' in the Bible

And the Angel of the Lord appeared to the woman and said to her, “Behold, you are infertile and have no children, but you shall conceive and give birth to a son.

For behold, you shall conceive and give birth to a son. No razor shall come upon his head, for the boy shall be a Nazirite [dedicated] to God from birth; and he shall begin to rescue Israel from the hands of the Philistines.”

and he saith to me, Lo, thou art pregnant, and bearing a son, and now do not drink wine and strong drink, and do not eat any unclean thing, for a Nazarite to God is the youth from the womb till the day of his death.'