Only 2 days growth in 8 days

Terrill

I had an US when I was supposed to be 6w2d on 5/12, I measured 5w6d or 6w exactly with no heartbeat or visible flickering. Today 8 days later I measured only 6w1day with 100bpm HB. They didn’t put sound waves on so I couldn’t hear it 😔. So I should’ve been around 7w1d. Anyone else had an experience where baby didn’t grow much but everything was ok? Anyone else have them say they aren’t letting you hear the HB anymore? I just so worried the baby isn’t growing well and this with be my third MC!