im really worried about your condition.as you have mentioned early urine pregnancy
tests to be positive and later hcg levels were low with negative urine pregnancy test. although miscarriage
is a strong possibility ( because you complain of abdominal cramps, back pain & bleeding) but early pregnancy hCG levels can be confusing to interpret.
this could also mean a threatened abortion
( where the baby is still alive). all this will be confirmed only with a ultrasound
. treat this as an emergency & consult your obstetrician immediately & till then take complete bed rest.
Dr. Kanimozhi. S