27 weeks and bleeding

I really need help from people who have gone through this. I was sitting then all of a sudden blood just gushed out of me. I had to go the ER and the gynae on call did a vaginal exam even after i had requested that they do not do one because raptured membranes at 22 weeks. The gynae said that i have a low lying placenta and she did not see where the blood was coming from. I have been bleeding from two days. Today is day two. Its coming on and off. Has anyone gone through this please.