Help! FHR

So I'm about 6 weeks Pregnant and I started bleeding today, like a lot. So of course I went to the hospital and they did an ultrasound and an internal ultrasound where I got to see my baby's heart beat, but the heart beat was very slow. They told me I have to wait and see if I have a miscarriage. I dont want to just sit around and wait, anyone know any ways to increase my baby's heart rate???