Slow rising HCG

Co

First was 14dp6dt and second was 16dp6dt. It was a 61% rise, not doubled. They have me going back Friday for more bloodwork and I am booked in for an ultrasound on the 13th at 7 weeks. Has any one had their HCG not double and still have a successful pregnancy? I have read that it can take 72-96 hours for it to double once over 1200 so I’m holding onto that hope. I just really hope it is finally our time 😔