Re: positive blood test for preg is 100% OR not.
She must be going through a chemical pregnancy. Its a very early miscarriage. Even after the miscarriage, hcg hormones take time to leave the system. Unfortunately i have had it a couple of times where my blood and urine test was positive but then a few days later, i ended up having my periods because the pregnancy was not viable and the embryo wasnt able to implant properly. It usually happens very early even before you go for your ultrasound but unfortunately it exists. It wasnt a false positive, just a very early miscarriage (chemical pregnancy)