Miscarried day after seeing healthy baby

I started spotting on Sunday so went in for an ultrasound on Monday, I was 7 weeks. It was incredible--I could see the sack, tiny baby, and we could see the heartbeat! I was so relieved. My spotting stopped Tuesday morning but I started bleeding heavily later that day. Went in again Wednesday for another ultrasound and there was nothing--no sack, no baby, just an empty uterus. It's been really hard for me dealing with seeing the baby as healthy and then immediately losing her/him. Anyone else have that experience?