With my last pregnancy, I had loads of trouble with threatened-miscarriage and I had to have loads of blood tests. When they confirmed it, they said I was only 2 weeks pregnant, as confirmed by serum - but the embryo was too small to even see on a scan because they tried that. I had to go in every few days for blood tests and I know I was about 5 weeks pregnant before my HCG levels were at 10 miu - which is the earliest a urine test can pick it up.
I would probably be about 4 weeks pregnant now, going by the 5 September ML date, so by my calculations, I don't think a urine test would work for at least a few more days.
