Hi, i am a 30 yr old mother of 3, all happy healthy pregnancies. I am or was pregnant, i went in for a repeat ultrasound and heard the dr. Say something about a collapse. Not sure what happened in this pregnancy. The 1st u/s showed an enlarged yolk sac, a fetal pole with cardiac activity. At that point it sounded promising even with the enlarged yolk sac. But now i am scheduled for a D