ER visit and hCG levels dropping!!??

Samantha • Life is short. Find someone to love completely.
I went to the ER on Friday night because I had some minor bleeding (mostly brown, a tiny bit of pink, only when I wiped).
They took my hCG levels and they were a little over 82,000 (I was 11w 6d).
I had a pelvic exam and everything looked right (my cervix was closed).
They wanted me to follow up on Monday and get my beta hCG levels checked to make sure they were either staying the same or rising.
They called me this morning with the results and my hCG was a little over 62,000 (20,000 lower than they were on Friday night).
So, they scheduled me for an ultrasound tomorrow at 12:45 (I will be 12w and 4d).
WAITING. HOPING. PRAYING.
What do you ladies think? Have any of you had similar experiences?