Unclear Miscarriage

So Tuesday night I started cramping so bad I was up every hour, and the next morning I was spotting. Went to ER and that doctor told me my cervix is open and no heart beat (5 weeks 5 days at the time) Yesterday I went to an OB for a follow up and she told me my baby has a heart beat of 100, and is right where it's meant to be and my cervix is closed. Cramping is still intense, comes and goes. Teeny Tiny clots when I wipe. I am fully anticipating losing this baby, and fokr my follow up on the 28th to confirm. Any thoughts? I'm dying over hear overthinking everything.