K.E.
Go to the ER immediately if you can't get a response from the Dr. I had a problem where the placenta had partially detached and the bleeding was from my body trying to replace that part of the placenta. The bleeding was gradual at first and then just started gushing. You can honestly bleed to death from that condition if you do nothing so get to the ER. If that is the case, they'll have to deliver the baby and placenta ASAP.
I'd also love to know who this Dr. is so I can tell friends and family to never go there.