Big scare tonight 😢

I am somewhere between 10-11 weeks pregnant. No one can seem to nail it down lol. Everything has been good...until tonight. I had a hard BM (sorry, tmi) because I've been somewhat constipated, and when I wiped, there was red blood. Not a ton, but enough. I went to the ER, they did blood work which came back normal, my hcg level was 181,000. They did an ultrasound and said I am 10w6d, the baby is measuring appropriately, and I saw the heartbeat. They could not see any cause for the bleed, but I am still doing it lightly. They diagnosed me with a threatened miscarriage and said to see my regular doctor today. I am so sad I can't even breathe. I am praying for a miracle.