If the doctor took a sample of the amniotic fluid he could tell. Because there is DNA in the amniotic fluid. But someone can usually guess at 16 weeks on an ultrasound and 20 weeks a person can usually tell for sure. kittenbrower Â· 9 years ago.
1 Pupusas Revueltas have a filling made of a mixture of cheese, chicharrones and refried beans. 2  Pupusas de Queso y Loroco have a filling made of a cheese and tropical vine flower (Loroco).
There is also the pupusa revuelta with mixed ingredients, such as queso (cheese), frijoles (beans), , and chicharrÃ³n or bacon. Pupusas are similar to tortillas and especially to arepas. In fact, in El Salvador, normal tortillas are about the same diameter and thickness as pupusas, without the filling. Making pupusas.