Pure scatology. You should change your screen name to bibleignoramus, Einstein.
"And the angel said to her: Fear not, Mary, for thou hast found grace with God. Behold thou shalt conceive in thy womb and shalt bring forth a son: and thou shalt call his name Jesus." Luke 1:30-31
Yes, certainly. Though not necessarily her egg. Otherwise there would have been no need for Jesus to have said what He said of John.