Sotah 12: Moshe's Special Birth

More exegesis of the Torah's verses on the opening on the story of the Exodus - beginning with Yocheved's pregnancy with Moshe (some of which presupposes knowledge of other midrashim). Tracking her pregnancy, and then the birth of Moshe. Also, the calendar of these events, including the date of Moshe's birth (Nisan? Sivan?)