PLEASE I NEED SOME HOPE!

Yesterday took an at home test sooo happy it was positive...had some symptoms that lead me to believei was pregnant. Boobs hurting, nauseated & throwing up sleeping so often, super hungry wanted realfood , and food aversions... no period for 6 months + so didnt kno if i could get pregnantbeen PRAYING AND NEEDING THIS CHILD SOOOO MUCH ! ultrasound today showed baby measures 8 weeks , but no heart beat... CAN i still be pregnant no spotting nor bleeding, no cramps, nothing thatd make me think the worst. Have any of yall got a similar experience where the dr was WRONG ? by next appt did baby have a ♡ beat? Please i need some positivitySO MUCH!!!!