[Zoggite]

If it were me, I'd feel pretty confident that I wasn't pregnant: EHC was taken in the optimum window of efficiency, and 2 pregnancy tests a week after intercourse should, by now, reveal something if there was something to reveal:
"HCG is produced by the placenta during pregnancy, shortly after the embryo attaches to the uterine lining. Usually HCG can be detected by a home pregnancy test 7-10 days after conception. The further in to the pregnancy you are the higher the levels of HCG in your urine.This pregnancy dip strip detects HCG in urine at a concentration of 10mIU/ml (MilliInternational Units) or greater. The concentration of HCG in non-pregnant women is normally 5.0mIU/ml. At the time of the last missed menstrual period, urine HCG levels are about 100mlU/ml with peak levels of 100,000 to 200,000mlU/ml seen at the end of the first trimester."

But I wouldn't feel 100% sure until I'd started a period though...
On the other hand,either way I couldn't do anything about it anyway until I was really overdue by at least a few days...