Miscarriage or ectopic the doctor's dont know

I don't know if this is the right group. But my doctor dont know if im having a miscarriage or ectopic pregnancy. Im 5weeks and 4 days. Well supposed to be. I feel no pain but im bleeding. Ive had 2 ultrasounds in 2 days and they see no baby. My hcg level was only 552 Wed. Im worried. About what the doctor's will say monday when I go the the radiologists and get more blood work.