SOMEONE PLEASE HELP AM I HAVE A MISCARRIAGE

Okay, I am 6 weeks today. I went into the hospital yesterday for bleeding. They did blood work, external and internal ultrasounds and I was fine and so was baby. My discharge paper says I could be a early miscarriage but I was fine and so was baby. I wake up this morning bleeding like I have my period, I have passed a few clots. My lowers back is killing me and I have diarrhea. The discharge paper says if I don’t stop bleeding in 3 days to see more help. SOME PLEASE HELP ME