Early Bleeding 4 to 5 weeks

Hi .. this is my first pregnancy so everything is new and I don't know what to expect. I've been experiencing some brown discharge and today some blood. I went to the EPU last night and there was nothing they could do for me. They said it's a waiting game. I have a scan booked on the 22nd Jan which would make me about 6 to 7 weeks. I feel like I am a little lost... don't know what to think or feel. :(