Waiting for hCG levels. 🙏🏽

Chisa
Went in on Monday for hCG levels since I've been spotting (brown discharge) for 2 weeks. Levels came back at 45539 and everything was normal. Today I went in for a viability ultrasound and I measured 6w2d! 🤔 No heartbeat. I thought I was 7w/4days. I'm sure of my last period. She said its 50/50. Could go either way. Now I'm waiting to see if the hCG levels have increased or decreased since Monday. Ugh! This is torture! I had a miscarriage in August, PLEASE don't let this be another one. 
***UPDATE***
Just heard back from doc, hCG levels went from 45539 to 47393 since Monday so still in the game so far. Back a week from today for another ultrasound.