The Conception and the Birth
Allah, the Exalted, informs;
فَحَمَلَتْهُ فَانتَبَذَتْ بِهِ مَكَانًا قَصِيًّا
So she conceived him, and she withdrew with him to a remote place,
Allah, the Exalted, informs about Maryam that when Jibril had spoken to her about what Allah said, she accepted the decree of Allah.
Many scholars of the predecessors (Salaf) have mentioned that;
at this point the angel (who was Jibril) blew into the opening of the garment that she was wearing. Then the breath descended until it entered into her vagina and she conceived the child by the leave of Allah.
Muhammad bin Ishaq said,
"When she conceived him and filled her water jug (at a well), she returned (to her people). After this, her menstrual bleeding ceased and she experienced what the pregnant woman experiences of sickness, hunger, change of color and there was even a change in the manner of her speech. After this, no people came to visit any house like they did the house of Zakariyya. The word spread among the Children of Israel and the people were saying, `Verily, her partner (in fornication) was Yusuf, because there was no one else in the temple with her except him.' So she hid herself from the people and placed a veil between herself and them. No one saw her and she did not see anyone else."
Allah said