How soon can a pregnancy test detect pregnancy?
Usually, it can be indicated by a test around the first day of
the missed period. Sometimes up to 4 days prior. I am 6 weeks
pregnant now and my pregnancy home test detected it the day of my
missed period..and if you go to the doctor the day of your missed
period and they do a blood test,they will tell you if you are
pregnant.Blood test is really the only certain/definate way.. I
took a pregnancy test a week before my period was even due, with my
first child and it came back positive.