*** TMI picture!! *** heavy bleeding 4 weeks pregnant

Megan

 Blood test done three days ago was negative.. later that day started spotting brown and thought maybe I'm just now implanting. Tested yesterday and got two positive home pregnancy tests, went in for blood work and it came back positive although very very low HCG level. It was only 12. She said it could be that low because it is so early.  Started heavily bleeding today and everyone keeps trying to reassure me that some women bleed while pregnant but I don't see anyway to sustain a full pregnancy while bleeding like this. Supposed to go back tomorrow for bloods to see if the number has gone up or down. Any ladies have bleeding in early pregnancy? If so I'm assuming not as much as me? I'm 99% sure I'm miscarrying but just wanted to see if maybe anyone had gone through the same thing and came out with a healthy baby.