Hcg gone from 25 to 17

Robynne • Miscarriage in April 15 at 9 weeks and MC in November 15 at 5 weeks, now expecting our rainbow baby December 2016 🌈🎆
I just found out I was pregnant 4 days ago, but had blood tests and today was told they have dropped to 17. I'm taking that as I'm
About to miscarry, has anyone ever experienced this? 
Second loss this year 😓