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).
A pupusa is a thick, handmade corn tortilla filled with a characteristic combination of savory fillings such as seasoned beans, cooked pork, a mixture of fresh and aged cheese or other blends, and then placed on a hot griddle or skillet until golden on both sides.