tests are 99% accurate if performed under stringent settings. Folic acid
is a nutritional supplement and is the right thing to consume now. Your doctor is right in asking for a sonogram after 6 days as a gestation sac along with yolk sac, fetal pole
and fetal heart can be viewed by then. when a pregnancy can be confirmed by a sonogram, there is no need to ask for a blood test
. In fact, a blood test is advised when there is an ambiguous urine test. Take care.