I didn't want to R&R, but I don't know how much help I can be.
I don't know anything about how the English health system works or what the different types of facilities are there, but here in the US, if I were bleeding I'd go to the emergency room immediately.
Also your epu (I assume early pregnancy unit), do they have an emergency number you can call? Out here, there is always an on-call doctor and nurse for after-hours emergencies and they will also advise about bleeding, but I have a feeling they would just tell you to get to a hospital/ emergency room anyway