For this I do not know, I have been thinking about my religious opinion recently and how I do not get why a loving God would send people to Earth just to go to Hell and that the Catholic Church most likely used that as a scare tactic.
By miraculous appearances do you mean those wackos that think she appears in their food? Then no. Do I think she was a virgin? Hard to say up to Jesus's birth considering God can do almost anything and this is tough to say like what Dust Bunnies told me (when he asked me this one question) that God still has to abide to laws of physics but after his birth then of course not.
I never really got how the Pope is appointed by God when it seems bureaucratic.
Why do you call yourself catholic then?
Morality, religion, metaphysics, all the rest of ideology and their corresponding forms of consciousness, thus no longer retain the semblance of independence. They have no history, no development; but men, developing their material production and their material intercourse, alter, along with this their real existence, their thinking and the products of their thinking.
-The German Ideology, Karl Marx-