Update on missed miscarriage

I blogged a few days ago that I was told that my baby was at 6weeks +5 days and no heartbeat anymore. The doctor prescribed cytotec, and told me to start them soon. I sought a 2nd opinion today with a different doctor, and they found a heartbeat of 134, but the baby was measuring 6 weeks+4 days and the gestational sac is measuring 7 weeks +1 day, yet with my lmp I'm supposed to be 8weeks + 5 days....the doctor and radiologist are baffled and told me to take it day by day. I'm just so thankful I didn't take the cytotec!! Please moms to be, if you have any doubts, do not hesitate to get a second opinion!! 🙏🏻