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).
The two most common pupusas are the pupusa de quesillo (cheese) and more popular pupusa revuelta with mixed ingredients of cheese, beans, and chicharron. ChicharrÃ³n pupusas are typically served with (curtido lightly fermented cabbage slaw with red chilies and). vinegar