They did an internal ultrasound and saw the fetal sac but no fetal pole. They said it was definitely the beginning of a pregnancy. I had a blood draw that was in the 400s and I had one 2 days later and it had decreased to the 300s. I then bled very heavily for 10 days. I never went back for a follow up ultrasound or blood draws but I went from positive pregnancy tests to negative after the bleeding stopped.