Bleeding early pregnancy

Brianna

Found out I was pregnant Monday. Well today I woke up like I started my period. . Lots of blood when I sit on the toilet none in my pad? It’s slowly stopping but I’m at the hospital now got an ultrasound & blood done no word back yet. Bleeding went away. Has this happened to anyone and it wasn’t a miscarriage? I have no cramps just back is aching a little bit.