HCG levels reducing

Veronica
I found out I was pregnant in November and had a scare before Thanksgiving. I started bleeding heavy and bad cramps that was manageable, but I still wanted to see if everything was okay w/ the embryo. At this point I'm 5 weeks and 6 days, the physician checked and the bleeding was okay nothing to worry about. But then I had an US done at the hospital and usually you can't see much this early on but the US Tech told me that my HCG level was an 84. Before being discharged that physician told me that me levels was suppose to double every 48-72 hrs. Me and my husband went back 48 hrs later and my levels went from a 84 to a 24. I've been praying every since that my growing baby will continue to grow and be healthy. Has this happened to anyone? I would love to know the outcome