There's NOTHING in the Gospel of Saint John at all about the Virgin Birth.
If there was an Immaculate Conception and Assumption of Mary, Jesus would have told us...And since He didn't, your religion is just making it up...
The fact that the Nestorian interpretation of Scripture denies this, does not mean that the Church made it up.
If your church didn't make it up, where'd it come from??? It's certainly not in the scripture...